After Switching to 4.20 from 4.19 engine won't open a new inherited cpp class

I converted our project from 4.19 to 4.20 and now i am not able to open a cpp class. it adds class to visual studio but not to editor and it wont compile


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I think is because the name of some bluprints. Try to remove the accent like ù à è from the names of every stuff.