In this case I misunderstood your screenshot, sorry.
I don’t know where the error comes from then.
But for StaMPS, shouldn’t you simply split and deburst all scenes and then coregister them with back geocoding, as described here, instead of using the TOPS Coregistration?
Did you see the snap2stamps package? Snap2stamps package: a free tool to automate the SNAP-StaMPS Workflow
It does all the preprocessing for you, you just have to install python, prepare one master and edit the config file.