Visual Studio on compile - many errors that aren't valid errors

Development Programming & Scripting C++
1

Ok so novice VS C++ user so any feedback appreciated.
I’m encountering a repeating issue whereby after making some minor edit on a project that compiled fine, I suddeny get dozens and dozens of non sensical errors after a build (Ctrl+Shift+B)

ie 'foo': is not a member of 'Afoo'

syntax error: missing ';' before '*'
on the following line
UBoxComponent* Collider;

unexpected token(s) preceding ';'
on the following line
ABall* BallRef;

It’s a very simple Pong tutorial I am following.
There must be something major and obvious that is set up wrong in my project.

Any tips or feedback appreciated!

2

My guess, your includes are not setup correctly. Cleanup your includes and/or use unity build settings.
Have you checked the build options in MyProject.Build.cs?

bUseUnity = true;
3

Are these actually errors preventing you from compiling, or just IntelliSense errors? Only worry about errors you get in your Output log. IntelliSense can’t understand macros, so these lead to a bunch of false errors all the time.