Errors in log file – can’t find the source – help!

Hi TGX and hello to all the people in the forum.

I am working on a mod for your amazing skin and use it for over half a year.
Ever since updating to Kodi 17 the skin throws me errors which I cannot seem to find.
Also skin.service. is giving me an error and everytime if fix the syntax of the xml file it reverts back on every lunch.

please take a look at the photo. Any help or guidance would be highly appreciated.

Log screenshot: