Unreal wont load project

So I’m currently working on the building escape project in the Unreal course and for some reason, it keeps crashing/ refusing to open. I am up to the point where we add the trigger volume and cannot figure out where the hiccup is.
private:
UProperty(VisibleAnywhere);
float OpenAngle = 90.0f;

UProperty(EditAnywhere);
ATriggerVolume* PressurePlate;

This is the code I added to start and if I remove and rebuild the project Unreal will open but if I add it in the editor will crash. I know in the videos there are no semicolons after the UProperty lines but my solution won’t build without them.

I also have this #include “Engine/TriggerVolume.h” at the top of the OpenDoor.h

Thanks in advance for the assistance

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