snap2stamps: splitting_slaves completed but nothing in the split folder

Hi guys, I’m looking for some help here for the use of snap2stamps. When launching python project.conf in terminal, it showed splitting was successfully completed. But the folder split was empty. It was supposed to save the splitted slave image there, right? For more informaiton, I’m using SNAP 7 and ubuntu 18.04. Here are some screenshots at terminal and the log file:


However, instead of using snap2stamps, I loaded the graphic file: slave_split_applyorbit.xml in SNAP and ran it. I got the splitted slave image data and the corresponding .dim file. Thank you!