Hello,
I am having this error on the Schedulix server, after a long time working fine
-- Schedulix 2.9 version
ERROR ZServer Server Error: <type 'exceptions.TypeError'>, cannot concatenate 'str' and 'NoneType' objects: file: /Software/Schedulix/zope/lib/python2.7/site-packages/Zope2-2.13.22-py2.7.egg/ZServer/HTTPServer.py line: 190
HTTPServer.py line: 190 => env['SERVER_PROTOCOL']="HTTP/"+request.version ## According to what the error indicates
Pablo Maldonado