UE5.1 - NOT ABLE TO ACCESS PROJECT PLUGINS

I’m using UE5.1 and encountering errors when trying to use the EnhancedInputPlugin for player movement in my game. Despite enabling the plugin and setting the default input to enhanced player input in Edit>Project settings>Input, I’m unable to access the plugin files in my actor.cpp file without including the entire file path. Also, I’m experiencing random errors in my project. One minute it’ll work. I’ll close the project. Not make a single change to the code and then try reloading my project from VisualStudio and suddenly i’m hit with errors that weren’t there before. Can someone explain why my project is having trouble accessing the enabled plugins and why Unreal is giving me so many issues despite being a fresh download?

Yes, I have the enhanced input pluggin enabled in my unreal project. Yes, i’ve went to Edit>Project settings>Input> and set the default input to enhanced player input.