I configured my bot on the Tool Labs to use the shared Pywikibot code that was available in the directory /shared/pywikipedia/core
Since about 5 hours the shared code is no more available.
It is like T125505: Tool Labs: shared Pywikibot code not available
"python: can't open file '/shared/pywikipedia/core/pwb.py': [Errno 2] No such file or directory"