Solar panel damage

Fourman110

Good news is I finally finished my solar suitcase. Bad news is had a drill slip as it was drilling a hole, my backing wood slipped to the vide and the drill took a bite out of the back. Didn’t punch through the glass but did lift a little piece.

Any idea what to seal it with? Thinking of using an epoxy as I’ve read silicone caulk may have an ingredient that can corrode the cell. Any suggestions on what to measure to make sure I don’t have a problem?