No content in Details tab

Hi. I did something and now I can’t rotate my SpringArm. Also when I click the component, the Details tab is empty (Look screen shot). How can I fix that?
I tried to comment UPROPERTY and re-compile. Also tried to restart UE4. Didn’t help.

Probably you are missing some property specifiers in your header file?

UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Components")
USpringArmComponent* SprintArmComp;