TypeError: unsupported operand type(s) for +: 'NoneType' and 'NoneType'

[anonymous]

How to Reproduce

While doing a GET operation on /changeset/fe3edfceb59f84e056a84224c012a59e26fe39f9/OpenModelica, Trac issued an internal error.

Trying to view existing OMEdit ticket 4670866

Request parameters:

{'new': u'fe3edfceb59f84e056a84224c012a59e26fe39f9',
 'new_path': u'/OpenModelica'}

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729; rv:11.0) like Gecko

System Information

System information not available

Enabled Plugins

Plugin information not available

Python Traceback

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/trac/web/main.py", line 554, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/local/lib/python2.7/dist-packages/trac/web/main.py", line 247, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/local/lib/python2.7/dist-packages/trac/versioncontrol/web_ui/changeset.py", line 353, in process_request
    self._render_html(req, repos, chgset, restricted, xhr, data)
  File "/usr/local/lib/python2.7/dist-packages/trac/versioncontrol/web_ui/changeset.py", line 588, in _render_html
    diff_bytes += _estimate_changes(old_node, new_node)
  File "/usr/local/lib/python2.7/dist-packages/trac/versioncontrol/web_ui/changeset.py", line 538, in _estimate_changes
    return old_size + new_size
TypeError: unsupported operand type(s) for +: 'NoneType' and 'NoneType'

[Adrian Pop]

Yeah, Trac is really bad on handling GIT submodules.
See: ​https://trac.edgewall.org/ticket/10603

I suggest you look at the changes on the github.com site:
​https://github.com/OpenModelica/OMCompiler/commits/master
until Trac fixes this issue.

[Martin Sjölund]

I'll close this since we don't have a component for trac bugs.