Thank you very much for helping out here and putting me on the right track to solve it. Should I mark this topic as solved? and yes must be something very weird as i had system wide no markdown installed so it only existed within the FreeCAD user folder which gets filled on install of the python mod...

Installing 3.3.7 systemwide did solve the error message for me, but that would mean i have to add to the bug report i just did a moment ago on github, means the markdown file getting used for building the daily is somehow outdated it seems. LIsting with pip it did not show markdown in any way, howev...

This as well results in an error on trying to import it, probably means this dependency did not get installed? import markdown Traceback (most recent call last): File "<input>", line 1, in <module> File "/home/michael/.local/share/FreeCAD/AdditionalPythonPackages/markdown/__init__.py&...

Since about two days after updating the freecad-daily package from the Ubuntu ppa the addon manager fails to initialize, see log below. 10:51:21 Init: Initializing /usr/share/freecad-daily/Mod/AddonManager... failed 10:51:21 ---------------------------------------------------------------------------...