Standard control extension fails to load

[Lesedi]

I implemented the standard control extension from the SAUI5 learning journey by coping the code on the lesson. However, the control fails to load. Please see image below. I checked everything even deleted the file and created it again and still the same error appears.

[david_bizer]

Hi, how does your controller and view look like where you register the HoverButton? There may be a problem with your path.

[Lesedi]

I looked at the path over and over again, and found nothing to be wrong. Please check below.