Unexpected exception when getting view part instance of view part, 1603 error, can'not deactivate my license

Hello,

this morning I had a problem to continue my translation because appeared the error in script on the page

I tried to resolve the problem as it was described on Knowledge, and I had to reinstall the Trados 2021.

So it appeared the 1603 error message and note "user already exists". I tried to deactivate my license, but I have again the error message.

Can you help me please?

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