I've exactly the same problem reported here:
...and I tried everything was suggested by Admin...with no success.
When I call the function I put the entire path:
I even launched the script on "examples/FormatConversion/transformDocument/libreoffice"...and I got the same error output: "Warning: rename(./transformDocument_libreoffice_1.pdf,transformDocument_libreoffice_1.pdf): No such file or directory in /Users/zoba-mac/Downloads/Storm/SW/phpdocx-premium-10.0-ns/Classes/Phpdocx/Transform/TransformDocAdvLibreOffice.php on line 174"
My /home/.config is 777.
What else is wrong?