Any newly created C++ Class always cause errors ue5.2.1

Hi there,
i wanted to try and extend the basic movement component of ue5, but every class I create instantly cause errors to pop up. Following 7 errors always show up, even if I don’t change anything on the generated code (basic ue setup). I did all the needed setup for visual studio and unreal engine 5.2.1 and have no clue why those errors occur. I’m thankful for any advice!

(Sorry for german layout, but error codes are available)

I get those errors too since I’m using Unreal (not over a year), but I think that is ‘normal’ and related with the engine code.
Generally those are not a problem to build and run your code and can simply ignore.

Ahh, okay. I was worried, but the implementation I wanted to make works now. The engine sometimes woudn’t start, although my changed code didn’t seem to be wrong, thats why I asked about the instant new errors which made the engine startup unstable.
Ty for the reply!