EmailDistributor throws an error, notification is not working

[thomas.schabetsberger@…]

• Upgraded from Trac 1.2.5 to 1.4 using pip
• Since upgrade notifications are not working any more

Trac Log:

2019-09-21 17:11:29,918 Trac[mail] WARNING: EmailDistributor caught exception while formatting ticket to text/plain for email: <class 'trac.ticket.notification.TicketFormatter'>
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/trac/notification/mail.py", line 383, in distribute
    outputs[fmt] = formatter.format(transport, fmt, event)
  File "/usr/local/lib/python2.7/dist-packages/trac/ticket/notification.py", line 143, in format
    return self._format_plaintext(event)
  File "/usr/local/lib/python2.7/dist-packages/trac/ticket/notification.py", line 248, in _format_plaintext
    return self._format_body(data, 'ticket_notify_email.txt')
  File "/usr/local/lib/python2.7/dist-packages/trac/ticket/notification.py", line 313, in _format_body
    template = chrome.load_template(template_name, text=True)
  File "/usr/local/lib/python2.7/dist-packages/trac/web/chrome.py", line 1370, in load_template
    return self._load_jinja_template(filename, text)
  File "/usr/local/lib/python2.7/dist-packages/trac/web/chrome.py", line 1396, in _load_jinja_template
    return (self.jenv_text if text else self.jenv).get_template(filename)
  File "/usr/local/lib/python2.7/dist-packages/jinja2/environment.py", line 830, in get_template
    return self._load_template(name, self.make_globals(globals))
  File "/usr/local/lib/python2.7/dist-packages/jinja2/environment.py", line 804, in _load_template
    template = self.loader.load(self, name, globals)
  File "/usr/local/lib/python2.7/dist-packages/jinja2/loaders.py", line 125, in load
    code = environment.compile(source, name, filename)
  File "/usr/local/lib/python2.7/dist-packages/jinja2/environment.py", line 591, in compile
    self.handle_exception(exc_info, source_hint=source_hint)
  File "/usr/local/lib/python2.7/dist-packages/jinja2/environment.py", line 780, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/var/data/trac/templates/ticket_notify_email.txt", line 4, in template
    pv = [(a[0].strip(), a[1].strip()) for a in [b.split(':') for b in
TemplateSyntaxError: expected token ',', got 'for'
2019-09-21 17:11:29,918 Trac[mail] WARNING: EmailDistributor cannot send event 'ticket' as 'text/plain': email@abc.om

[Jun Omae]

InstallationIssue.

You've installed a customized ticket_notify_email.txt in /var/data/trac/templates, however the template file is probably a Genshi template or wrong Jinja2 template. Trac 1.4 switched from Genshi to Jinja2 template engine.

You should correct the template file.

[Ryan J Ollos]

Looks like we might need to update the example in the documentation: 1.3/TracNotification. And also mention the need to adapt Email templates in 1.3/TracUpgrade.

[ricardopiccini@…]

I have almost the same error and i have updated e-mail template like you said, plus cookbook for outlook. Even without part for outlook have the same error.

2020-03-31 23:28:30,154 Trac[mail] WARNING: EmailDistributor caught exception while formatting ticket to text/plain for email: <class 'trac.ticket.notification.TicketFormatter'>
Traceback (most recent call last):
  File "D:\TRAC\python\lib\site-packages\trac\notification\mail.py", line 487, in distribute
    outputs[fmt] = formatter.format(transport, fmt, event)
  File "D:\TRAC\python\lib\site-packages\trac\ticket\notification.py", line 143, in format
    return self._format_plaintext(event)
  File "D:\TRAC\python\lib\site-packages\trac\ticket\notification.py", line 248, in _format_plaintext
    return self._format_body(data, 'ticket_notify_email.txt')
  File "D:\TRAC\python\lib\site-packages\trac\ticket\notification.py", line 313, in _format_body
    template = chrome.load_template(template_name, text=True)
  File "D:\TRAC\python\lib\site-packages\trac\web\chrome.py", line 1370, in load_template
    return self._load_jinja_template(filename, text)
  File "D:\TRAC\python\lib\site-packages\trac\web\chrome.py", line 1396, in _load_jinja_template
    return (self.jenv_text if text else self.jenv).get_template(filename)
  File "D:\TRAC\python\lib\site-packages\jinja2\environment.py", line 883, in get_template
    return self._load_template(name, self.make_globals(globals))
  File "D:\TRAC\python\lib\site-packages\jinja2\environment.py", line 857, in _load_template
    template = self.loader.load(self, name, globals)
  File "D:\TRAC\python\lib\site-packages\jinja2\loaders.py", line 129, in load
    code = environment.compile(source, name, filename)
  File "D:\TRAC\python\lib\site-packages\jinja2\environment.py", line 638, in compile
    self.handle_exception(source=source_hint)
  File "D:\TRAC\python\lib\site-packages\jinja2\environment.py", line 832, in handle_exception
    reraise(*rewrite_traceback_stack(source=source))
  File "d:\trac stack projects\apic\templates\ticket_notify_email.txt", line 12, in template
    {% choose ticket.new %}\
TemplateSyntaxError: Encountered unknown tag 'choose'.
2020-03-31 23:28:30,154 Trac[mail] WARNING: EmailDistributor cannot send event 'ticket' as 'text/plain':

Template:

$ticket_body_hdr
--------------------------------------------------------------------------
# set sel = ('Reporter', 'Owner', 'Type', 'Status', 'Priority', 'Milestone',
             'Component', 'Severity', 'Resolution', 'Keywords')
# for a in ticket_props.replace('|', '\n').splitlines()[1:-1]|map('trim'):
#   set a = a.split(':', 1)|map('trim')|list
#   if len(a) > 1 and a[0] in sel:
${'%-*s  %s'|format(12, a[0] + ':', a[1])}
#   endif
# endfor
--------------------------------------------------------------------------
{% choose ticket.new %}\
{%   when True %}\
$ticket.description
{%   end %}\
{%   otherwise %}\
{%     if changes_body %}\
${_('Changes (by %(author)s):', author=change.author)}

$changes_body
{%     end %}\
{%     if changes_descr %}\
{%       if not changes_body and not change.comment and change.author %}\
${_('Description changed by %(author)s:', author=change.author)}
{%       end %}\
$changes_descr
--
{%     end %}\
{%     if change.comment %}\

${_('Comment:') if changes_body else _('Comment (by %(author)s):', author=change.author)}

$change.comment
{%     end %}\
{%   end %}\
{% end %}\

${'-- '}
${_('Ticket URL: <%(link)s>', link=ticket.link)}
$project.name <${project.url or abs_href()}>
$project.descr

[Jun Omae]

Replying to ricardopiccini@…:

TemplateSyntaxError: Encountered unknown tag 'choose'.
                                              ^^^^^^

Template:

...
{% choose ticket.new %}\
   ^^^^^^

Your template is invalid. Please ask on the MailingList for support questions.

[anonymous]

Replying to Jun Omae:

Replying to ricardopiccini@…:

  File "d:\trac stack projects\apic\templates\ticket_notify_email.txt", line 12, in template
    {% choose ticket.new %}\
TemplateSyntaxError: Encountered unknown tag 'choose'.
                                              ^^^^^^

Template:

...
{% choose ticket.new %}\
   ^^^^^^

Your template is invalid. Please ask on the MailingList for support questions.

Sorry for post here again, but this template is here:

TracNotification#CustomizingContent

and its complement is here:

CookBook/Notification/Templates#jinja2

[ricardopiccini@…]

Replying to anônimo:

Replying to Jun Omae:

Replying to ricardopiccini@…:

  File "d:\trac stack projects\apic\templates\ticket_notify_email.txt", line 12, in template
    {% choose ticket.new %}\
TemplateSyntaxError: Encountered unknown tag 'choose'.
                                              ^^^^^^

Template:

...
{% choose ticket.new %}\
   ^^^^^^

Your template is invalid. Please ask on the MailingList for support questions.

Sorry for post here again, but this template is here:

TracNotification#CustomizingContent

and its complement is here:

CookBook/Notification/Templates#jinja2

With that comment I tried to said that I just copy the template from TracGuide. Could be just an example, but should be work.

[Ryan J Ollos]

Replying to ricardopiccini@…:

Sorry for post here again, but this template is here:

TracNotification#CustomizingContent

and its complement is here:

CookBook/Notification/Templates#jinja2

With that comment I tried to said that I just copy the template from TracGuide. Could be just an example, but should be work.

Revised in TracNotification@107.