Sub panel install issue
I'd be seriously tempted to email that picture to the licensing board...
I assume from your question that this was installed, incorrectly, by licensed electricians.
Buy a ground bar to fit your panel, note the pre-threaded holes in the back of the panel for the ground bar, move the ground wire to it, and remove the bonding screw. Or call up your &quot;licensed electricians&quot; and have them come correct their error without charging you extra, because it was a blatant error.
You will need a torque screwdriver (or low-value inch-pound torque wrench) for the connections to the ground bar, and your breakers, and perhaps you need to check the torque on the screws installed by your &quot;licensed electricians&quot; as well.