Iterator invalidation！The command execution stops partially, which is not a machine problem

[xiangyudong]

I use a point element layer to execute the iterator, and the calculation tool is distance accumulation.But when it reaches a certain table and level, that is, this red line, it will no longer run.At first I thought it was a problem with this point, but after deleting a few points, it wouldn't move every time I got there.This should not be a problem with the machine. I changed other layers with larger data volumes and it worked smoothly. Please tell me why this is happening. Thank you.