id summary reporter owner description type status priority component severity resolution keywords cc release 4080 TypeError: argument 1 must be string or read-only buffer, not None anonymous Felix Tiede "Calling depgraph first time I've got the following error. Refresh ticket page everything works fine. (BUT: Got graphivz image without links, description or something else?) {{{ Trac detected an internal error: TypeError: argument 1 must be string or read-only buffer, not None }}} {{{ Most recent call last: * File ""/usr/local/lib/python2.5/site-packages/Trac-0.11.1-py2.5.egg/trac/web/main.py"", line 423, in _dispatch_request * File ""/usr/local/lib/python2.5/site-packages/Trac-0.11.1-py2.5.egg/trac/web/main.py"", line 197, in dispatch * File ""build/bdist.linux-i686/egg/depgraph/web_ui.py"", line 93, in process_request * File ""build/bdist.linux-i686/egg/depgraph/depgraph.py"", line 201, in expand_macro * File ""build/bdist.linux-i686/egg/graphviz/graphviz.py"", line 348, in expand_macro * File ""build/bdist.linux-i686/egg/graphviz/graphviz.py"", line 534, in _launch Local variables: Name Value arg '/var/cache/trac/graphviz/1bbf2609dd4e22603167103e227ddb66e1356918.dot.png' ... args ('/usr/bin/rsvg', '--dpi-x=96', '--dpi-y=96', ... encoded_cmd ['/usr/bin/rsvg', '--dpi-x=96', '--dpi-y=96', ... encoded_input None p self }}}" defect closed normal TracTicketDepgraphPlugin normal fixed 0.11