Hello dear forum community,
i have a problem with creating my own plugin library for linking extern librarys like mongocxx, bsoncxx.
My stack is Jetbrains Rider (rider uproject)
→ Engine (UE 5.1.1)
→ MongoCXX Library
→ Game Project
→ MongoCXX Library
→ Game Project
The usage in my DatabaseManager
The IDE is showing no errors. On compiling i get this:
What i’m doing wrong? I don’t get it. Why is it so hard to link other librarys… 
Thank you guys. 