Figure tags have no bounding box

Hello, when I run the PDF Accessibility Checker (PAC) 3.0, I get an error message saying "figure element with no bounding box". I am working with Adobe Acrobat Pro DC. I searched the problem online and already tried what was recommended: I deleted the tag of the figure in the PDF and then created a new tag for this figure. However, the new tag of the figure still has no bounding box in the attribute objects.

I would be very happy if anyone could help me with this.

Thanks you!