I don’t know, that looks like a lot more than just a stall. There was a ton of flame that looked like it was coming out of the front or top of the engine, rather than just something shooting out the back.
Freeze frame: https://imgur.com/a/c3h8Qd3
The rotation already exacerbates the flow into that engine. Change in flow geometry gets more smoke in its way when it's already eating turbulent air.
We don't know if it just had a disruption or a full-blown stall, but give the way it made it to takeoff speed and then just gave out, stall seems likely.