No ENVI image found

Hi everyone, so I have been trying to produce an interferogram with s1tbx and sentinel 1 iw slc images following the official esa snap tutorial, but every time I get to snaphu import, I get a message that no corresponding ENVI image has been generated and before that, the actual unwrapping does not actually happen, no processing bar or anything.
has anyone encountered similar issues?
here are some screenshots of the process: