Dear Zaixu,

I was unable to find the line of code you are referring to. In the current version of the code there is no file '1.txt'. This does not ring a bell, and I would be surprised if any component of PSOM wrote files without specifying the full path. I suspect this may be a modification to the original code. If you do find the problematic code in the head revision of PSOM, please let me know the line number:
https://github.com/SIMEXP/psom/blob/mast...

Best,

Pierre