./cwebp-alt -p /usr/local/etc/cwebp.conf: error: *** Use `--help' option for more information. (Unknown error)/usr/local/etc/cwebp.conf: error: cannot run as root (Permission denied)You will get an error message like this otherwise: cwebp-alt: error while loading shared libraries: libopenjp2.so.7: cannot open shared object file: No such file or directory. A tiff library dependency, libtiff5 or similar, that needs to be separately installed via sudo apt-get install libtiff5. See here for report.
If I run cwebp-alt in shell I recieve the same message is in log:testing case: w at /nfsmnt/hosting1_1/c/b/cb70c92a-4223-4bdc-bdff-9445dc18a7ad//nfsmnt/hosting1_1/c/b/cb70c92a-4223-4bdc-bdff-9445dc18a7ad/: /nfsmnt/hosting1_1/c/b/cb70c92a-4223-4bdc-bdff-9445dc18a7ad/: error while loading shared libraries: libjpeg.so.62: cannot open shared object file: No such file or directoryoptimizer found 827ec27edc