Message "Parameter is not valid" in SDL Trados Studio 2021 constantly popping up

Good morning,

recently, when I was translating a memoQ XLIFF source file in SDL Trados Studio 2021 the message "Parameter is not valid" was constantly popping up. I was not able to type the further text (Trados "froze") and had to close Trados and open it again in order to continue.

I have tried to rename the folder in C:\Users\User\AppData\Roaming\SDL\SDL Trados Studio, but it hasn't solved the problem.

Disabling AutoSuggest helped, but this of course cannot be a permanent solution.

Do you know how to fix this error permanently? Or has it something to do with the source file?

Kind regards,

Malgorzata