[MM3-users] Internal Server Errors in mailmanweb.log

Dec. 18, 2025


      I keep seeing several errors like the below in my mailmanweb.log and not
sure what the causa is.
[ERROR] [2025-12-17 18:24:22,053] [log] 1969696 140553251733568 Internal
Server Error: /archives/list/
kictanet@lists.kictanet.or.ke/thread/C6QQOYBSQIWHJ7ALGSR23U44U2FHTFG2/
Traceback (most recent call last):
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/core/handlers/exception.py",
line 55, in inner
    response = get_response(request)
               ^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/core/handlers/base.py",
line 197, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/hyperkitty/lib/view_helpers.py",
line 137, in inner
    return func(request, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/hyperkitty/views/thread.py",
line 238, in thread_index
    return render(request, "hyperkitty/thread.html", context=context)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/shortcuts.py", line
24, in render
    content = loader.render_to_string(template_name, context, request,
using=using)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/loader.py",
line 62, in render_to_string
    return template.render(context, request)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/backends/django.py",
line 61, in render
    return self.template.render(context)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 175, in render
    return self._render(context)
           ^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 167, in _render
    return self.nodelist.render(context)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 1005, in render
    return SafeString("".join([node.render_annotated(context) for node in
self]))

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 1005, in &lt;listcomp>
    return SafeString("".join([node.render_annotated(context) for node in
self]))
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 966, in render_annotated
    return self.render(context)
           ^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/loader_tags.py",
line 157, in render
    return compiled_parent._render(context)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 167, in _render
    return self.nodelist.render(context)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 1005, in render
    return SafeString("".join([node.render_annotated(context) for node in
self]))

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 1005, in &lt;listcomp>
    return SafeString("".join([node.render_annotated(context) for node in
self]))
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 966, in render_annotated
    return self.render(context)
           ^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/loader_tags.py",
line 63, in render
    result = block.nodelist.render(context)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 1005, in render
    return SafeString("".join([node.render_annotated(context) for node in
self]))

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 1005, in &lt;listcomp>
    return SafeString("".join([node.render_annotated(context) for node in
self]))
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 966, in render_annotated
    return self.render(context)
           ^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/defaulttags.py",
line 321, in render
    return nodelist.render(context)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 1005, in render
    return SafeString("".join([node.render_annotated(context) for node in
self]))

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 1005, in &lt;listcomp>
    return SafeString("".join([node.render_annotated(context) for node in
self]))
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 966, in render_annotated
    return self.render(context)
           ^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/loader_tags.py",
line 208, in render
    return template.render(context)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 177, in render
    return self._render(context)
           ^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 167, in _render
    return self.nodelist.render(context)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 1005, in render
    return SafeString("".join([node.render_annotated(context) for node in
self]))

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 1005, in &lt;listcomp>
    return SafeString("".join([node.render_annotated(context) for node in
self]))
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 966, in render_annotated
    return self.render(context)
           ^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/defaulttags.py",
line 238, in render
    nodelist.append(node.render_annotated(context))
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 966, in render_annotated
    return self.render(context)
           ^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/loader_tags.py",
line 208, in render
    return template.render(context)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 177, in render
    return self._render(context)
           ^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 167, in _render
    return self.nodelist.render(context)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 1005, in render
    return SafeString("".join([node.render_annotated(context) for node in
self]))

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 1005, in &lt;listcomp>
    return SafeString("".join([node.render_annotated(context) for node in
self]))
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 966, in render_annotated
    return self.render(context)
           ^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 1064, in render
    output = self.filter_expression.resolve(context)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/django/template/base.py",
line 742, in resolve
    new_obj = func(obj, *arg_vals)
              ^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/hyperkitty/templatetags/decorate.py",
line 42, in render
    return mark_safe(text_renderer(content))
                     ^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/mistune/markdown.py", line
120, in __call__
    return self.parse(s)[0]
           ^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/mistune/markdown.py", line
93, in parse
    self.block.parse(state)
  File
"/opt/mailman/venv/lib/python3.11/site-packages/mistune/block_parser.py",
line 457, in parse
    end_pos2 = self.parse_method(m, state)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/mailman/venv/lib/python3.11/site-packages/mistune/core.py",
line 216, in parse_method
    return func(m, state)
           ^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/mistune/block_parser.py",
line 368, in parse_block_quote
    text, end_pos = self.extract_block_quote(m, state)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/mistune/block_parser.py",
line 345, in extract_block_quote
    end_pos = self.parse_method(m4, state)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/mailman/venv/lib/python3.11/site-packages/mistune/core.py",
line 216, in parse_method
    return func(m, state)
           ^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/mistune/block_parser.py",
line 387, in parse_list
    return parse_list(self, m, state)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/mistune/list_parser.py",
line 64, in parse_list
    groups = _parse_list_item(block, bullet, groups, token, state, rules)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File
"/opt/mailman/venv/lib/python3.11/site-packages/mistune/list_parser.py",
line 174, in _parse_list_item
    block.parse(child, rules)
  File
"/opt/mailman/venv/lib/python3.11/site-packages/mistune/block_parser.py",
line 457, in parse
    end_pos2 = self.parse_method(m, state)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/mailman/venv/lib/python3.11/site-packages/mistune/core.py",
line 214, in parse_method
    assert lastgroup
AssertionError

Since they are many, perhaps the causa is the same thing that can be fixed?
--
Best regards,
Odhiambo WASHINGTON,
Nairobi,KE
+254 7 3200 0004/+254 7 2274 3223
In an Internet failure case, the #1 suspect is a constant: DNS.
"Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-)
[How to ask smart questions:
http://www.catb.org/~esr/faqs/smart-questions.html]

[MM3-users] Internal Server Errors in mailmanweb.log

Washington Odhiambo