Intellisense shows an error but compiles fine

Hello, i have a weird problem, it’s not so important since i’m able to compile my code, but it still a bit annoying, Intellisense is showing an error here

however, my code compiles perfectly
here is the header file containing the declarations

the error translated in english is saying that a pointer for an incomplete class type is not authorised

what could i do to fix this intellisense error ?