Directory content looks like the new EPESI - not 1.3. composer files, vendor dir - all of that has been introduced lately in 1.7.x, or 1.8.0 - I'm not sure right now and too lazy to make sure.
Probably your files are mixed - some from the new, some from the old version.
Did you fully recovered from this issue https://forum.epesibim.com/d/4852-help-on-way-back-to-v1-3-to-retrieve-data?