ValueError: could not convert string to float: None

[hoyacom]

How to Reproduce

While doing a POST operation on /admin/ticket/milestones/dev-1.2.2, Trac issued an internal error.

(please provide additional details here)

Request parameters:

{u'__EDITOR__1': u'textarea',
 u'__FORM_TOKEN': u'1df05d9a5e0c865852a78233',
 'cat_id': u'ticket',
 u'description': u'',
 u'duedate': u'2016. 7. 19. \uc624\uc804 12:00:00',
 u'name': u'1.2.2',
 'panel_id': u'milestones',
 'path_info': u'dev-1.2.2',
 u'save': u'\uc800\uc7a5\ud558\uae30'}

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36

System Information

Trac	1.0.11
Babel	2.3.4
Genshi	0.7 (with speedups)
pysqlite	2.6.0
Python	2.7.5 (default, Nov 20 2015, 02:00:19) [GCC 4.8.5 20150623 (Red Hat 4.8.5-4)]
pytz	2016.4
RPC	1.1.5
setuptools	21.2.1
SQLite	3.7.17
jQuery	1.7.2
jQuery UI	1.8.21
jQuery Timepicker	1.0.1

Enabled Plugins

AwesomeAttachmentsPlugin	0.4.dev0
clients	0.5dev-r0
DuplicateTicketSearch	1.0.3.post0
EstimationTools	0.4.7.post0
ExcelDownloadPlugin	0.12.0.5
ExtendedVersionPlugin	1.0dev-r0
graphviz	1.0.0.8dev-r0
GridModify	0.1.6dev-r0
IniAdmin	0.3.post0
TicketImport	0.8.3
timingandestimationplugin	1.4.8b0
TracAccountManager	0.4.4
TracAutocompleteUsersPlugin	0.4.4.dev0
TracBacklog	0.3.1
TracCustomFieldAdmin	0.2.12
TracDateField	3.0.0
TracGanttCalendarPlugin	0.6.4.post0
TracMarkdownMacro	0.11.4.post0
TracSubTicketsPlugin	0.2.0.dev20160707
TracTags	0.7
TracWysiwyg	0.12.0.5.post0
TracXMLRPC	1.1.5

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/trac/web/main.py", line 562, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.7/site-packages/trac/web/main.py", line 249, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib/python2.7/site-packages/trac/admin/web_ui.py", line 119, in process_request
    path_info)
  File "/usr/lib/python2.7/site-packages/trac/ticket/admin.py", line 56, in render_admin_panel
    return self._render_admin_panel(req, cat, page, version)
  File "/usr/lib/python2.7/site-packages/trac/ticket/admin.py", line 262, in _render_admin_panel
    mil.update(author=req.authname)
  File "/usr/lib/python2.7/site-packages/trac/ticket/model.py", line 1088, in update
    self.move_tickets(self.name, author, "Milestone renamed")
  File "/usr/lib/python2.7/site-packages/trac/ticket/model.py", line 1143, in move_tickets
    ticket.save_changes(author, comment, now)
  File "/usr/lib/python2.7/site-packages/trac/ticket/model.py", line 369, in save_changes
    listener.ticket_changed(self, comment, author, old_values)
  File "build/bdist.linux-x86_64/egg/timingandestimationplugin/ticket_daemon.py", line 153, in ticket_changed
    self.watch_hours(ticket, author)
  File "build/bdist.linux-x86_64/egg/timingandestimationplugin/ticket_daemon.py", line 107, in watch_hours
    hours = convertfloat(ticket['hours'])
  File "build/bdist.linux-x86_64/egg/timingandestimationplugin/ticket_daemon.py", line 14, in convertfloat
    return float(x.replace(',','.'))
ValueError: could not convert string to float: None

[Jun Omae]

PluginIssue (​th:TimingAndEstimationPlugin, ​th:#12311).