You called "gg" at 33:24
Telemazor after that is disabled because it would be bad manners
Okay, that was not a serious answer. Serious answer:
You're definitely right that the laser didn't fire. There were no shields around that could have absorbed the shots (like a parashield or a T2 shield). And the weapon firing animation never played for the laser. You had the upgrade. You obviously didn't have "hold fire" on because your ACU was shooting things.
The only thing I can think of is that you gave two teleport orders in a row (one to get in, and one to travel) without first giving an order to attack something. Otherwise I have no idea what would cause that. I believe you can normally fire the laser while you're teleporting, I remember seeing people blow stuff up while they're trying to move to the next target.