Stalls and crashes on Trac 1.0.1

[anonymous]

This plugin will not work for me using Trac 1.0.1

I am running it on an Ubuntu 14.04 Server which is running Python 2.7.6 with Graphviz 2.36 installed.

I installed it as an .egg in my environment's plugins folder using the latest ZIP download (changeset 13847).

When I load the page in the admin panel it loads the "Actions" buttons, "Columns" checkboxes, and the save/cancel/restore/text buttons, but nothing loads for the actual workflow table, and the workflow diagram just says "Updating..." but never loads either.

If I try clicking either of the "Save changes", "Cancel", "Restore initial state", or "Text mode" buttons it also causes an internal error in Trac with the following Traceback:

File "/usr/local/lib/python2.7/dist-packages/trac/web/main.py", line 497, in _dispatch_request
  dispatcher.dispatch(req)
File "/usr/local/lib/python2.7/dist-packages/trac/web/main.py", line 214, in dispatch
  resp = chosen_handler.process_request(req)
File "/usr/local/lib/python2.7/dist-packages/trac/admin/web_ui.py", line 125, in process_request
  path_info)
File "build/bdist.linux-x86_64/egg/tracworkflowadmin/web_ui.py", line 136, in render_admin_panel
  self._parse_request(req)
File "build/bdist.linux-x86_64/egg/tracworkflowadmin/web_ui.py", line 672, in _parse_request
  params = json.loads(req.args.get('params'))
File "/usr/lib/python2.7/json/__init__.py", line 338, in loads
  return _default_decoder.decode(s)
File "/usr/lib/python2.7/json/decoder.py", line 366, in decode
  obj, end = self.raw_decode(s, idx=_w(s, 0).end())

Inspecting the req.args.get('params') value shows that it is None which is what's causing that specific error.

I have quite a few plugins installed, but the only ones that effect workflow, tables, or use Graphviz are:

​AdvancedTicketWorkflowPlugin	0.11dev
​Table-Sorter-Plugin	1.0
​trac-WorkflowActionButtons	0.2
​TracMindMapMacro	0.4

I do also have a fairly large workflow I am using:

[ticket-workflow]
accept = new,assigned,accepted,reopened,needs_info,reviewing,in_progress -> accepted
accept.operations = set_owner_to_self
accept.permissions = TICKET_MODIFY
failed = testing -> in_progress
failed.name = failed testing
failed.permissions = TICKET_MODIFY
in_progress = new,assigned,accepted,reopened,needs_info,reviewing -> in_progress
in_progress.name = in progress
in_progress.permissions = TICKET_MODIFY
leave = * -> *
leave.default = 1
leave.operations = leave_status
needs_info = new,assigned,accepted,reopened,reviewing,in_progress -> needs_info
needs_info.name = needs additional information
needs_info.permissions = TICKET_MODIFY
passed = testing -> closed
passed.name = passes testing
passed.operations = set_resolution
passed.permissions = TICKET_MODIFY
passed.set_resolution = fixed
reassign = new,assigned,accepted,reopened -> assigned
reassign.operations = set_owner
reassign.permissions = TICKET_MODIFY
reassign_in_progress = in_progress -> *
reassign_in_progress.name = reassign to
reassign_in_progress.operations = set_owner
reassign_in_progress.permissions = TICKET_MODIFY
reassign_needs_info = needs_info -> *
reassign_needs_info.name = reassign to
reassign_needs_info.operations = set_owner
reassign_needs_info.permissions = TICKET_MODIFY
reassign_review = review -> *
reassign_review.name = reassign to
reassign_review.operations = set_owner
reassign_review.permissions = TICKET_MODIFY
reassign_testing = testing -> *
reassign_testing.name = reassign to
reassign_testing.operations = set_owner
reassign_testing.permissions = TICKET_MODIFY
reopen = closed -> reopened
reopen.operations = del_resolution
reopen.permissions = TICKET_CREATE
resolve = new,assigned,accepted,reopened,needs_info,reviewing,in_progress -> closed
resolve.operations = set_resolution
resolve.permissions = TICKET_MODIFY
review = new,assigned,accepted,reopened,needs_info,in_progress,testing -> reviewing
review.name = needs review
review.permissions = TICKET_MODIFY
testing = new,assigned,accepted,reopened,needs_info,reviewing,in_progress -> testing
testing.name = needs testing
testing.permissions = TICKET_MODIFY

There is nothing in the logs at all when the page fails to load, and there is only the traceback when the internal error occurs.

[Jun Omae]

Cannot reproduce it. What of browser are you using?