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"Your view is erroneous and could not be processed."

Hey, when I wanted to enter my OpenProject the whole page stayed white. After that my admin restarted the service. (Maybe there was an update?)
Everything is there again, except that when I want to enter the work packages, I get the red error box with "Your view is erroneous and could not be processed. An internal error has occured." 

I also get an error log thats attached

can anyone help me with that? or give me some advise ?