Any help with this error?

[jowe01]

PLEASE IGNORE - Had not seen that there was already a post treating the same issue (however, so far not yet fully resolved, it seems)


Recently, every time I open (as GM) a character sheet, I get lots of the following error message:
Error message.jpg

Does anybody know what that means, and how I can get rid of it?

The character sheet opens correctly, but still these messages appear every time (which can be VERY often in a game session). This did not happen until recently.