Update to 1.4.1 failed - OctoPrint wont start after reboot

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1

What is the problem?

Updating the OctoPrint from GUI to 1.4.1 failed. After reboot of the Raspberry, Octoprint GUI wont load.

"sudo service octoprint status" returns:
● octoprint.service - LSB: OctoPrint daemon
Loaded: loaded (/etc/init.d/octoprint; generated)
Active: active (exited) since Wed 2020-08-05 16:13:56 EEST; 1h 30min ago
Docs: man:systemd-sysv-generator(8)
Process: 1288 ExecStart=/etc/init.d/octoprint start (code=exited, status=0/SUCCESS)

Aug 05 16:13:56 usrpi4 systemd[1]: Starting LSB: OctoPrint daemon...
Aug 05 16:13:56 usrpi4 octoprint[1288]: * Starting OctoPrint Daemon OctoPrint
Aug 05 16:13:56 usrpi4 octoprint[1288]: ...done.
Aug 05 16:13:56 usrpi4 systemd[1]: Started LSB: OctoPrint daemon.

What did you already try to solve it?

Tried to run manual update. It failed again.
I used the following commands:

  1. ~/OctoPrint/venv/bin/pip install -U octoprint
    The result is in: Manual update - terminal.log

Complete Logs

octoprint.log, serial.log or output on terminal tab at a minimum, browser error console if UI issue ... no logs, no support! Not log excerpts, complete logs.)

octoprint.log (226.9 KB) plugin_pluginmanager_console.log (11.9 KB) plugin_softwareupdate_console.log (274.4 KB) serial.log (296 Bytes)
Manual update - terminal.log (17.7 KB)

Additional information about your setup

OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible

Rasberry Pi 4B, 4GB
Ubuntu 20.04.1, x64

2

In a meantime I was able to solve the problem.
For some reason "python-dev" was missing or messed during the update process.
I installed it with:
sudo apt-get install python-dev

Then updated the OctoPrint with:
~/OctoPrint/venv/bin/pip install -U octoprint

And rebooted the service:
sudo service octoprint restart