What is the problem?
Why the M118 command to open a message on octoprint browser only works on arduino?
What did you already try to solve it?
Have tried on duet3d Wifi, einsy board (original prusa MK3), Prusa (BQ hephestos)
I've tried to mess with yaml configs, and made a lot of testing
Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware,
serial.log or output on terminal tab, ...)
version OctoPrint 1.3.9 running on OctoPi 0.15.1
Duet |Firmware Name:|RepRapFirmware for Duet 2 WiFi/Ethernet
|Firmware Electronics:|Duet WiFi 1.02 or later + DueX5|
|Firmware Version:|2.02RC3(RTOS) (2018-10-17b2)|
|WiFi Server Version:|1.20alpha1|
|Web Interface Version:|1.22.4-b1|
Prusa BQ 2.5.2 #510
Prusa MK3 3.4.0 1327