Arducam Raspberry Pi Noir Camera Module, 8MP IMX219 Not showing up

Camera model
Arducam Raspberry Pi Noir Camera Module, 8MP IMX219 (https://smile.amazon.com/gp/product/B085HLP8FN/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1)

What is the problem?
Webcamd doesn't appear to start / crashes.

What did you already try to solve it?
Enabled camera in /boot/octopi.txt

Logs (/var/log/webcamd.log, syslog, dmesg, ... no logs, no support)
/var/log/webcamd.log contents

Starting up webcamDaemon...

--- Configuration: ----------------------------
cfg_file:      /boot/octopi.txt
camera:        raspi
usb options:   -r 640x480 -f 10
raspi options: -fps 10
http options:  -w ./www-octopi -n --listen 127.0.0.1

Explicitly USB device:
-----------------------------------------------

Found video devices:
/dev/video10
/dev/video11
/dev/video12
/dev/video13
/dev/video14
/dev/video15
/dev/video16
Scan again in two minutes
/root/bin/webcamd: line 103: kill: (432) - No such process

Goodbye...

(This repeats again and again)

grep -i webcam /var/log/syslog

Jun 10 16:04:50 octopi systemd[1]: Starting the OctoPi webcam daemon with the user specified config...
Jun 10 16:06:20 octopi systemd[1]: webcamd.service: Start operation timed out. Terminating.
Jun 10 16:06:20 octopi systemd[1]: webcamd.service: Failed with result 'timeout'.
Jun 10 16:06:20 octopi systemd[1]: Failed to start the OctoPi webcam daemon with the user specified config.
Jun 10 16:06:21 octopi systemd[1]: webcamd.service: Service RestartSec=1s expired, scheduling restart.
Jun 10 16:06:21 octopi systemd[1]: webcamd.service: Scheduled restart job, restart counter is at 724.
Jun 10 16:06:21 octopi systemd[1]: Stopped the OctoPi webcam daemon with the user specified config.
Jun 10 16:06:21 octopi systemd[1]: Starting the OctoPi webcam daemon with the user specified config...
Jun 10 16:07:51 octopi systemd[1]: webcamd.service: Start operation timed out. Terminating.
Jun 10 16:07:51 octopi systemd[1]: webcamd.service: Failed with result 'timeout'.
Jun 10 16:07:51 octopi systemd[1]: Failed to start the OctoPi webcam daemon with the user specified config.
Jun 10 16:07:53 octopi systemd[1]: webcamd.service: Service RestartSec=1s expired, scheduling restart.
Jun 10 16:07:53 octopi systemd[1]: webcamd.service: Scheduled restart job, restart counter is at 725.
Jun 10 16:07:53 octopi systemd[1]: Stopped the OctoPi webcam daemon with the user specified config.
Jun 10 16:07:53 octopi systemd[1]: Starting the OctoPi webcam daemon with the user specified config...
Jun 10 15:52:14 octopi systemd[1]: Condition check resulted in FFMPEG HLS webcam streaming service being skipped.
Jun 10 15:52:14 octopi systemd[1]: Starting the OctoPi webcam daemon with the user specified config...
Jun 10 15:52:31 octopi octoprint[322]: |  Sidebar Webcam (0.1.8) = /home/pi/oprint/lib/python3.7/site-packages/octoprint_webcamSB
Jun 10 15:52:38 octopi octoprint[322]: 2021-06-10 15:52:38,071 - octoprint.plugins.webcamSB - INFO - Sidebar Webcam LOADED
Jun 10 15:52:39 octopi octoprint[322]: 2021-06-10 15:52:39,001 - octoprint.plugins.thespaghettidetective - INFO - Starting webcam streamer
Jun 10 15:52:42 octopi systemd[1]: webcamd.service: Succeeded.
Jun 10 15:52:42 octopi systemd[1]: Stopped the OctoPi webcam daemon with the user specified config.
Jun 10 15:52:43 octopi octoprint[322]: 2021-06-10 15:52:43,063 - octoprint.plugins.thespaghettidetective - WARNING - No camera detected. Skipping webcam streaming

DMESG output

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 5.4.79-v7+ (dom@buildbot) (gcc version 8.4.0 (Ubuntu/Linaro 8.4.0-3ubuntu1)) #1373 SMP Mon Nov 23 13:22:33 GMT 2020
[    0.000000] CPU: ARMv7 Processor [410fd034] revision 4 (ARMv7), cr=10c5383d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt: Machine model: Raspberry Pi 3 Model B Plus Rev 1.3
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] Reserved memory: created CMA memory pool at 0x34000000, size 64 MiB
[    0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[    0.000000] On node 0 totalpages: 229376
[    0.000000]   Normal zone: 2016 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 229376 pages, LIFO batch:63
[    0.000000] percpu: Embedded 20 pages/cpu s49740 r8192 d23988 u81920
[    0.000000] pcpu-alloc: s49740 r8192 d23988 u81920 alloc=20*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 227360
[    0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  console=ttyS0,115200 console=tty1 root=PARTUUID=47ecb017-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 827696K/917504K available (9216K kernel code, 698K rwdata, 2608K rodata, 1024K init, 827K bss, 24272K reserved, 65536K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] ftrace: allocating 29201 entries in 58 pages
[    0.000000] rcu: Hierarchical RCU implementation.
[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] random: get_random_bytes called from start_kernel+0x324/0x4f8 with crng_init=0
[    0.000000] arch_timer: cp15 timer(s) running at 19.20MHz (phys).
[    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x46d987e47, max_idle_ns: 440795202767 ns
[    0.000007] sched_clock: 56 bits at 19MHz, resolution 52ns, wraps every 4398046511078ns
[    0.000021] Switching to timer-based delay loop, resolution 52ns
[    0.000289] Console: colour dummy device 80x30
[    0.000882] printk: console [tty1] enabled
[    0.000946] Calibrating delay loop (skipped), value calculated using timer frequency.. 38.40 BogoMIPS (lpj=192000)
[    0.000994] pid_max: default: 32768 minimum: 301
[    0.001201] LSM: Security Framework initializing
[    0.001436] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.001483] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.002948] Disabling memory control group subsystem
[    0.003089] CPU: Testing write buffer coherency: ok
[    0.003673] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.004633] Setting up static identity map for 0x100000 - 0x10003c
[    0.004849] rcu: Hierarchical SRCU implementation.
[    0.005554] smp: Bringing up secondary CPUs ...
[    0.006695] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[    0.007969] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002
[    0.009135] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003
[    0.009288] smp: Brought up 1 node, 4 CPUs
[    0.009377] SMP: Total of 4 processors activated (153.60 BogoMIPS).
[    0.009406] CPU: All CPU(s) started in HYP mode.
[    0.009431] CPU: Virtualization extensions available.
[    0.010519] devtmpfs: initialized
[    0.026643] VFP support v0.3: implementor 41 architecture 3 part 40 variant 3 rev 4
[    0.026955] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.027012] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[    0.030350] pinctrl core: initialized pinctrl subsystem
[    0.031476] NET: Registered protocol family 16
[    0.035683] DMA: preallocated 1024 KiB pool for atomic coherent allocations
[    0.040533] audit: initializing netlink subsys (disabled)
[    0.040831] audit: type=2000 audit(0.040:1): state=initialized audit_enabled=0 res=1
[    0.042178] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.042217] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.042450] Serial: AMBA PL011 UART driver
[    0.044427] bcm2835-mbox 3f00b880.mailbox: mailbox enabled
[    0.070102] raspberrypi-firmware soc:firmware: Attached to firmware from 2020-11-25 17:13, variant start_x
[    0.080116] raspberrypi-firmware soc:firmware: Firmware hash is 2e6292a5304b95ecfd700fc5ab2b793402056332
[    0.131579] bcm2835-dma 3f007000.dma: DMA legacy API manager, dmachans=0x1
[    0.133773] SCSI subsystem initialized
[    0.134047] usbcore: registered new interface driver usbfs
[    0.134130] usbcore: registered new interface driver hub
[    0.134275] usbcore: registered new device driver usb
[    0.136147] clocksource: Switched to clocksource arch_sys_counter
[    1.396894] VFS: Disk quotas dquot_6.6.0
[    1.397032] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    1.397247] FS-Cache: Loaded
[    1.397536] CacheFiles: Loaded
[    1.408840] thermal_sys: Registered thermal governor 'step_wise'
[    1.409226] NET: Registered protocol family 2
[    1.410247] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
[    1.410321] TCP established hash table entries: 8192 (order: 3, 32768 bytes, linear)
[    1.410464] TCP bind hash table entries: 8192 (order: 4, 65536 bytes, linear)
[    1.410674] TCP: Hash tables configured (established 8192 bind 8192)
[    1.410859] UDP hash table entries: 512 (order: 2, 16384 bytes, linear)
[    1.410933] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes, linear)
[    1.411244] NET: Registered protocol family 1
[    1.412043] RPC: Registered named UNIX socket transport module.
[    1.412076] RPC: Registered udp transport module.
[    1.412102] RPC: Registered tcp transport module.
[    1.412129] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    1.413789] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 7 counters available
[    1.417197] Initialise system trusted keyrings
[    1.417487] workingset: timestamp_bits=14 max_order=18 bucket_order=4
[    1.429087] FS-Cache: Netfs 'nfs' registered for caching
[    1.429948] NFS: Registering the id_resolver key type
[    1.430004] Key type id_resolver registered
[    1.430031] Key type id_legacy registered
[    1.430067] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    1.431371] Key type asymmetric registered
[    1.431401] Asymmetric key parser 'x509' registered
[    1.431481] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249)
[    1.431519] io scheduler mq-deadline registered
[    1.431546] io scheduler kyber registered
[    1.435010] bcm2708_fb soc:fb: FB found 1 display(s)
[    1.447727] Console: switching to colour frame buffer device 82x26
[    1.454835] bcm2708_fb soc:fb: Registered framebuffer for display 0, size 656x416
[    1.464758] bcm2835-rng 3f104000.rng: hwrng registered
[    1.467855] vc-mem: phys_addr:0x00000000 mem_base=0x3ec00000 mem_size:0x40000000(1024 MiB)
[    1.473577] vc-sm: Videocore shared memory driver
[    1.476636] gpiomem-bcm2835 3f200000.gpiomem: Initialised: Registers at 0x3f200000
[    1.494446] brd: module loaded
[    1.509399] loop: module loaded
[    1.513288] Loading iSCSI transport class v2.0-870.
[    1.516922] libphy: Fixed MDIO Bus: probed
[    1.519595] usbcore: registered new interface driver lan78xx
[    1.522234] usbcore: registered new interface driver smsc95xx
[    1.524775] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[    2.255626] Core Release: 2.80a
[    2.258075] Setting default values for core params
[    2.260523] Finished setting default values for core params
[    2.463402] Using Buffer DMA mode
[    2.465868] Periodic Transfer Interrupt Enhancement - disabled
[    2.468404] Multiprocessor Interrupt Enhancement - disabled
[    2.470890] OTG VER PARAM: 0, OTG VER FLAG: 0
[    2.473307] Dedicated Tx FIFOs mode
[    2.476284] WARN::dwc_otg_hcd_init:1074: FIQ DMA bounce buffers: virt = b4114000 dma = 0xf4114000 len=9024
[    2.481044] FIQ FSM acceleration enabled for :
               Non-periodic Split Transactions
               Periodic Split Transactions
               High-Speed Isochronous Endpoints
               Interrupt/Control Split Transaction hack enabled
[    2.492222] dwc_otg: Microframe scheduler enabled
[    2.492293] WARN::hcd_init_fiq:457: FIQ on core 1
[    2.494555] WARN::hcd_init_fiq:458: FIQ ASM at 8070b948 length 36
[    2.496823] WARN::hcd_init_fiq:497: MPHI regs_base at b8810000
[    2.499061] dwc_otg 3f980000.usb: DWC OTG Controller
[    2.501382] dwc_otg 3f980000.usb: new USB bus registered, assigned bus number 1
[    2.503765] dwc_otg 3f980000.usb: irq 56, io mem 0x00000000
[    2.506094] Init: Port Power? op_state=1
[    2.508391] Init: Power Port (0)
[    2.510947] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.04
[    2.515493] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    2.517952] usb usb1: Product: DWC OTG Controller
[    2.520339] usb usb1: Manufacturer: Linux 5.4.79-v7+ dwc_otg_hcd
[    2.522780] usb usb1: SerialNumber: 3f980000.usb
[    2.525857] hub 1-0:1.0: USB hub found
[    2.528207] hub 1-0:1.0: 1 port detected
[    2.531136] dwc_otg: FIQ enabled
[    2.531146] dwc_otg: NAK holdoff enabled
[    2.531155] dwc_otg: FIQ split-transaction FSM enabled
[    2.531170] Module dwc_common_port init
[    2.531508] usbcore: registered new interface driver usb-storage
[    2.534014] mousedev: PS/2 mouse device common for all mice
[    2.537542] bcm2835-wdt bcm2835-wdt: Broadcom BCM2835 watchdog timer
[    2.542879] sdhci: Secure Digital Host Controller Interface driver
[    2.545320] sdhci: Copyright(c) Pierre Ossman
[    2.548313] mmc-bcm2835 3f300000.mmcnr: could not get clk, deferring probe
[    2.551475] sdhost-bcm2835 3f202000.mmc: could not get clk, deferring probe
[    2.554273] sdhci-pltfm: SDHCI platform and OF driver helper
[    2.558696] ledtrig-cpu: registered to indicate activity on CPUs
[    2.561655] hidraw: raw HID events driver (C) Jiri Kosina
[    2.564424] usbcore: registered new interface driver usbhid
[    2.567058] usbhid: USB HID core driver
[    2.570637] vchiq: vchiq_init_state: slot_zero = (ptrval)
[    2.574982] [vc_sm_connected_init]: start
[    2.583777] [vc_sm_connected_init]: end - returning 0
[    2.588180] Initializing XFRM netlink socket
[    2.590572] NET: Registered protocol family 17
[    2.593055] Key type dns_resolver registered
[    2.595990] Registering SWP/SWPB emulation handler
[    2.598723] registered taskstats version 1
[    2.601105] Loading compiled-in X.509 certificates
[    2.603975] Key type ._fscrypt registered
[    2.606332] Key type .fscrypt registered
[    2.619407] uart-pl011 3f201000.serial: cts_event_workaround enabled
[    2.621834] 3f201000.serial: ttyAMA0 at MMIO 0x3f201000 (irq = 81, base_baud = 0) is a PL011 rev2
[    2.628415] bcm2835-power bcm2835-power: Broadcom BCM2835 power domains driver
[    2.632315] mmc-bcm2835 3f300000.mmcnr: mmc_debug:0 mmc_debug2:0
[    2.634714] mmc-bcm2835 3f300000.mmcnr: DMA channel allocated
[    2.663627] sdhost: log_buf @ (ptrval) (f4113000)
[    2.703154] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[    2.707127] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    2.711001] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    2.715563] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)
[    2.720329] of_cfs_init
[    2.722714] of_cfs_init: OK
[    2.725765] Waiting for root device PARTUUID=47ecb017-02...
[    2.738288] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[    2.746315] Indeed it is in host mode hprt0 = 00021501
[    2.820065] random: fast init done
[    2.867859] mmc0: host does not support reading read-only switch, assuming write-enable
[    2.878908] mmc0: new high speed SDHC card at address aaaa
[    2.881829] mmc1: new high speed SDIO card at address 0001
[    2.885154] mmcblk0: mmc0:aaaa SU16G 14.8 GiB
[    2.891180]  mmcblk0: p1 p2
[    2.916693] EXT4-fs (mmcblk0p2): INFO: recovery required on readonly filesystem
[    2.918955] EXT4-fs (mmcblk0p2): write access will be enabled during recovery
[    2.956200] usb 1-1: new high-speed USB device number 2 using dwc_otg
[    2.958595] Indeed it is in host mode hprt0 = 00001101
[    3.196516] usb 1-1: New USB device found, idVendor=0424, idProduct=2514, bcdDevice= b.b3
[    3.201139] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    3.204535] hub 1-1:1.0: USB hub found
[    3.207287] hub 1-1:1.0: 4 ports detected
[    3.356409] EXT4-fs (mmcblk0p2): recovery complete
[    3.364384] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    3.369710] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
[    3.381466] devtmpfs: mounted
[    3.390736] Freeing unused kernel memory: 1024K
[    3.393847] Run /sbin/init as init process
[    3.526200] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[    3.656599] usb 1-1.1: New USB device found, idVendor=0424, idProduct=2514, bcdDevice= b.b3
[    3.662034] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    3.665687] hub 1-1.1:1.0: USB hub found
[    3.668668] hub 1-1.1:1.0: 3 ports detected
[    3.986210] usb 1-1.1.3: new full-speed USB device number 4 using dwc_otg
[    4.021660] systemd[1]: System time before build time, advancing clock.
[    4.119271] usb 1-1.1.3: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice= 2.64
[    4.124752] usb 1-1.1.3: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[    4.130293] usb 1-1.1.3: Product: USB Serial
[    4.179164] NET: Registered protocol family 10
[    4.183520] Segment Routing with IPv6
[    4.228585] systemd[1]: systemd 241 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2 default-hierarchy=hybrid)
[    4.250459] systemd[1]: Detected architecture arm.
[    4.328821] systemd[1]: Set hostname to <octopi>.
[    4.456298] usb 1-1.1.1: new high-speed USB device number 5 using dwc_otg
[    4.586876] usb 1-1.1.1: New USB device found, idVendor=0424, idProduct=7800, bcdDevice= 3.00
[    4.592503] usb 1-1.1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    4.873160] lan78xx 1-1.1.1:1.0 (unnamed net_device) (uninitialized): No External EEPROM. Setting MAC Speed
[    4.880272] libphy: lan78xx-mdiobus: probed
[    4.923166] lan78xx 1-1.1.1:1.0 (unnamed net_device) (uninitialized): int urb period 64
[    5.269162] random: systemd: uninitialized urandom read (16 bytes read)
[    5.286478] random: systemd: uninitialized urandom read (16 bytes read)
[    5.290793] systemd[1]: Listening on Journal Socket.
[    5.297741] random: systemd: uninitialized urandom read (16 bytes read)
[    5.303926] systemd[1]: Created slice system-systemd\x2dfsck.slice.
[    5.311361] systemd[1]: Listening on udev Control Socket.
[    5.318700] systemd[1]: Listening on Syslog Socket.
[    5.326751] systemd[1]: Created slice system-getty.slice.
[    5.333366] systemd[1]: Condition check resulted in Kernel Module supporting RPCSEC_GSS being skipped.
[    5.339917] systemd[1]: Listening on udev Kernel Socket.
[    5.504694] i2c /dev entries driver
[    6.140574] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[    6.280048] systemd-journald[124]: Received request to flush runtime journal from PID 1
[    6.833974] vc_sm_cma: module is from the staging directory, the quality is unknown, you have been warned.
[    6.837359] bcm2835_vc_sm_cma_probe: Videocore shared memory driver
[    6.837383] [vc_sm_connected_init]: start
[    6.852317] [vc_sm_connected_init]: installed successfully
[    6.868995] mc: Linux media interface: v0.10
[    6.911344] videodev: Linux video capture interface: v2.00
[    6.995567] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[    6.995572] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[    6.998166] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[    7.008721] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.
[    7.015958] bcm2835_audio bcm2835_audio: card created with 8 channels
[    7.022482] bcm2835_isp: module is from the staging directory, the quality is unknown, you have been warned.
[    7.025860] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned.
[    7.031449] bcm2835_codec: module is from the staging directory, the quality is unknown, you have been warned.
[    7.274953] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[    7.404756] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[    7.463736] brcmfmac: F1 signature read @0x18000000=0x15264345
[    7.478605] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[    7.479078] usbcore: registered new interface driver brcmfmac
[    7.524088] brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43455-sdio.raspberrypi,3-model-b-plus.txt failed with error -2
[    7.635941] usbcore: registered new interface driver usbserial_generic
[    7.642199] usbserial: USB Serial support registered for generic
[    7.645906] usbcore: registered new interface driver ch341
[    7.645989] usbserial: USB Serial support registered for ch341-uart
[    7.646118] ch341 1-1.1.3:1.0: ch341-uart converter detected
[    7.651097] usb 1-1.1.3: ch341-uart converter now attached to ttyUSB0
[    7.662584] bcm2835-isp bcm2835-isp: Device node output[0] registered as /dev/video13
[    7.663272] bcm2835-isp bcm2835-isp: Device node capture[0] registered as /dev/video14
[    7.664176] bcm2835-codec bcm2835-codec: Device registered as /dev/video10
[    7.664238] bcm2835-codec bcm2835-codec: Loaded V4L2 decode
[    7.674449] bcm2835-codec bcm2835-codec: Device registered as /dev/video11
[    7.674500] bcm2835-codec bcm2835-codec: Loaded V4L2 encode
[    7.677354] bcm2835-isp bcm2835-isp: Device node capture[1] registered as /dev/video15
[    7.677954] bcm2835-isp bcm2835-isp: Device node stats[2] registered as /dev/video16
[    7.677997] bcm2835-isp bcm2835-isp: Register output node 0 with media controller
[    7.678021] bcm2835-isp bcm2835-isp: Register capture node 1 with media controller
[    7.678039] bcm2835-isp bcm2835-isp: Register capture node 2 with media controller
[    7.678070] bcm2835-isp bcm2835-isp: Register capture node 3 with media controller
[    7.681652] bcm2835-codec bcm2835-codec: Device registered as /dev/video12
[    7.681710] bcm2835-codec bcm2835-codec: Loaded V4L2 isp
[    7.682407] bcm2835-isp bcm2835-isp: Loaded V4L2 bcm2835-isp
[    7.815218] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[    7.832872] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Mar 23 2020 02:19:54 version 7.45.206 (r725000 CY) FWID 01-88ee44ea
[    9.679669] uart-pl011 3f201000.serial: no DMA platform data
[    9.928298] random: crng init done
[    9.928321] random: 7 urandom warning(s) missed due to ratelimiting
[   10.176208] Adding 102396k swap on /var/swap.  Priority:-2 extents:1 across:102396k SSFS
[   10.219387] 8021q: 802.1Q VLAN Support v1.8
[   10.512151] brcmfmac: brcmf_cfg80211_set_power_mgmt: power save enabled
[   10.819601] 8021q: adding VLAN 0 to HW filter on device eth0
[   12.870724] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   17.039085] Bluetooth: Core ver 2.22
[   17.039171] NET: Registered protocol family 31
[   17.039179] Bluetooth: HCI device and connection manager initialized
[   17.039472] Bluetooth: HCI socket layer initialized
[   17.039487] Bluetooth: L2CAP socket layer initialized
[   17.039512] Bluetooth: SCO socket layer initialized
[   17.058894] Bluetooth: HCI UART driver ver 2.3
[   17.058908] Bluetooth: HCI UART protocol H4 registered
[   17.058977] Bluetooth: HCI UART protocol Three-wire (H5) registered
[   17.059199] Bluetooth: HCI UART protocol Broadcom registered
[   17.318229] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   17.318240] Bluetooth: BNEP filters: protocol multicast
[   17.318260] Bluetooth: BNEP socket layer initialized

Contents of /boot/octopi.txt (commented lines removed)

camera="raspi"
camera_raspi_options="-fps 10"

Additional information about your setup (OctoPrint version, OctoPi version, ...)

System Information

browser.user_agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.1 Safari/605.1.15
connectivity.connection_check: 1.1.1.1:53
connectivity.connection_ok: true
connectivity.enabled: true
connectivity.online: true
connectivity.resolution_check: octoprint.org
connectivity.resolution_ok: true
env.hardware.cores: 4
env.hardware.freq: 1400
env.hardware.ram: 915718144
env.os.bits: 32
env.os.id: linux
env.os.platform: linux
env.plugins.pi_support.model: Raspberry Pi 3 Model B Plus Rev 1.3
env.plugins.pi_support.octopi_version: 0.18.0
env.plugins.pi_support.throttle_state: 0x80000
env.python.pip: 20.3.3
env.python.version: 3.7.3
env.python.virtualenv: true
octoprint.safe_mode: false
octoprint.version: 1.6.1
printer.firmware: Marlin Ver 1.0.2
systeminfo.generator: systemapi

output of systemctl stats webcamd

● webcamd.service - the OctoPi webcam daemon with the user specified config
   Loaded: loaded (/etc/systemd/system/webcamd.service; enabled; vendor preset: enabled)
   Active: inactive (dead) since Thu 2021-06-10 15:52:42 BST; 54min ago
  Process: 412 ExecStart=/root/bin/webcamd (code=exited, status=0/SUCCESS)

Jun 10 15:52:14 octopi systemd[1]: Starting the OctoPi webcam daemon with the user specified config...
Jun 10 15:52:42 octopi systemd[1]: webcamd.service: Succeeded.
Jun 10 15:52:42 octopi systemd[1]: Stopped the OctoPi webcam daemon with the user specified config.

Does the Pi see the camera at all? vcgencmd get_camera should tell you.

It shows me:

[sudo] password for pi:
supported=1 detected=0

This is the first place to start then - the Pi does not even see the camera. You probably need to check the cable is all plugged in correctly at both ends. Especially this one:

image

That regularly comes loose.

I just reseated the ribbon cable, are you saying theres another cable on the board?

Just verified that the tiny ribbon cable indicated in the picture is also well seated.

Update: I've tried three different RPi's, a 3b, 3b+ and a 4b and none of them could see the camera. Returning for a replacement