Steady the bracket from the left side using your fingers or tweezers.

At the same time, insert a small (1 mm) flathead screwdriver under the tiny tab on the right.

Finally, place one finger behind the tab, and pinch the bracket hard between your finger and the screwdriver to detach the cover.

This releases two slotted tabs that hold the cover to the bracket, and should free the cover.

Prying the cover off can be challenging and may take more than one attempt. Be patient, and take care not to pull on the bracket or tear the attached cables.