Android blueprint plugin errors

Hello,

I try to create an Android QRcode reader. So I add a C++ class to open visual 2022 and create a Blueprint plugin. At this point, I can access to the first test function in my blueprint, but I have a lot of errors like :

type "TOptional<FString>" 
type "TOptional<bool>" 
type "TOptional<FCppClassTypeInfo>" 
type "TOptional<EMouseCursor::Type>" 

and 43 more…( +1000 warning)

so I cannot add functions because I can’t build the plugin.

Anybody know why ?
Thx

note : I already try to delete folder, recompile etc., doesn’t change anything