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

[voznesensky@…]

How to Reproduce

Commit a simple update in git submodule and try to view the change in trac.

Python Traceback

Most recent call last:

File "/usr/lib/python2.7/dist-packages/trac/web/main.py", line 522, in _dispatch_request
  dispatcher.dispatch(req)
File "/usr/lib/python2.7/dist-packages/trac/web/main.py", line 243, in dispatch
  resp = chosen_handler.process_request(req)
File "/usr/lib/python2.7/dist-packages/trac/versioncontrol/web_ui/changeset.py", line 352, in process_request
  self._render_html(req, repos, chgset, restricted, xhr, data)
File "/usr/lib/python2.7/dist-packages/trac/versioncontrol/web_ui/changeset.py", line 586, in _render_html
  diff_bytes += _estimate_changes(old_node, new_node)
File "/usr/lib/python2.7/dist-packages/trac/versioncontrol/web_ui/changeset.py", line 537, in _estimate_changes
  return old_size + new_size

[Ryan J Ollos]

Which version of Trac are you running? Are you trying to report this issue for the GitPlugin?

[Jun Omae]

It seems that is Trac issue which has been reported in ​t:#10162 and ​t:#10732.

[voznesensky@…]

It is.