Error: Members App Widget Container Opacity throws error! Ok

Question:
When I want to change the Opacity of the container that is containing the members widget it, works only in Desktop View.
I got Errors in the Consol when trying to change the Opacity of the container in Tablet or Mobile View.

Product:
Wix Studio

What are you trying to achieve:
I want to set the Opacity of the Container to 0%

What have you already tried:
Reinstalled the Members App, tried to change opacity of the container in different order.

Additional information: