Object of type is not JSON serializable - Error during upload

[Darkmoner]

Hello,

After clicking Upload to Printer below error apears: [Object of type is not JSON serializable]

I'm sure it is releated to Cura profile, because after changing to Standard - default , everything works fine.

bad_profile.zip

Here is my profile what makes crash

[atroph]

I've noticed that UFP w/ thumbnail is what is causing the problem for me.

Standard upload "gcode" format works fine.

[atroph]

Looks like a cura bug.

See here. https://github.com/emtrax-ltd/Cura2MoonrakerPlugin/issues/55#issuecomment-1265732978

[emtrax-ltd]

https://github.com/Ultimaker/Cura/issues/13675