Lord Haseo said:
https://www.youtube.com/watch?v=sq51w34Hg9I@ 1:45
This argument need not go further
They ran around it like it was nothing when they were going toward Ben. Once Luke yells, it’s suddenly become a gigantic chasm and somehow they can’t seem to find a way around it
When they went around it the Stormies were distracted by Vader and the old guy in a dressing gown having a glow stick dance party (opps that was Episode 3).
With Luke screaming the galaxy’s favorite word at the top of his voice all the attention was on the remaining heroes.
Yes we all know that Stormies only hit heroes when the plot demands it and never fatally but they don’t know that. So you have a line of troopers firing away and a death pit (the bad guys think railings are unnecessary for some reason).