Exception raised by tbwiki software

Traceback (most recent call last):
  File "tbwiki.cgi", line 54, in 
    main(req)
  File "/home2/birdorg/work/tbwiki/cgi-bin/tbwiki_engine.py", line 2819, in main
    page_size = os.stat(req.page_dir+os.sep+req.page_name)[6]
OSError: [Errno 2] No such file or directory: '/home2/birdorg/work/tbwiki-data/tbwiki/pages/TestPyChart'