Your laser is connecting fine. The Homing error is because you don’t have GRBL configured to home but you are asking it to home.
2 options depending on your situation:
If you don’t have limit switches on your laser then stop asking it to home. If you have “Auto-home on startup” in Edit->Device Settings then disable that. If you’re pushing the Home button don’t do that.
If you do have limit switches and want to use them then enable Homing in GRBL. You can do that in Edit->Machine Settings or by entering $22=1 in Console.