cant join an empty team

[tykling]

Describe the bug
it is impossible to join a team which has 0 members

ValidationError at /bornhack-2026/teams/orga/join/
{'recipient': ['either to_recipient, bcc_recipient or cc_recipient required.']}

Request Method: POST
Request URL: https://bornhack.dk/bornhack-2026/teams/orga/join/
Django Version: 4.2.21
Python Executable: /usr/local/bin/uwsgi-3.11
Python Version: 3.11.14
Python Path: ['.', '', '/usr/local/lib/python311.zip', '/usr/local/lib/python3.11', '/usr/local/lib/python3.11/lib-dynload', '/usr/local/virtualenv/lib/python3.11/site-packages']
Server time: Sat, 06 Dec 2025 10:03:05 +0100
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.sites',
 'django.contrib.gis',
 'django.contrib.humanize',
 'colorfield',
 'channels',
 'corsheaders',
 'profiles',
 'camps',
 'shop',
 'news',
 'utils',
 'villages',
 'program',
 'info',
 'sponsors',
 'ircbot',
 'teams',
 'people',
 'tickets',
 'backoffice',
 'events',
 'rideshare',
 'tokens',
 'feedback',
 'economy',
 'wishlist',
 'facilities',
 'phonebook',
 'maps',
 'allauth',
 'allauth.account',
 'allauth.socialaccount',
 'allauth.mfa',
 'django_otp',
 'django_otp.plugins.otp_totp',
 'django_otp.plugins.otp_static',
 'django_bootstrap5',
 'reversion',
 'leaflet',
 'oauth2_provider',
 'taggit',
 'django_tables2',
 'django_filters']
Installed Middleware:
['django_prometheus.middleware.PrometheusBeforeMiddleware',
 'utils.middleware.NeverVaryTilesMiddleware',
 'django.middleware.gzip.GZipMiddleware',
 'corsheaders.middleware.CorsMiddleware',
 'django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'allauth.account.middleware.AccountMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django_otp.middleware.OTPMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'utils.middleware.RedirectExceptionMiddleware',
 'camps.middleware.RequestCampMiddleware',
 'oauth2_provider.middleware.OAuth2TokenMiddleware',
 'oauth2_provider.middleware.OAuth2ExtraTokenMiddleware',
 'django_prometheus.middleware.PrometheusAfterMiddleware']


Traceback (most recent call last):
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/core/handlers/exception.py", line 55, in inner
    response = get_response(request)
               ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/core/handlers/base.py", line 197, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/views/generic/base.py", line 104, in view
    return self.dispatch(request, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/contrib/auth/mixins.py", line 73, in dispatch
    return super().dispatch(request, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/views/generic/base.py", line 143, in dispatch
    return handler(request, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/views/generic/edit.py", line 208, in post
    return super().post(request, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/views/generic/edit.py", line 153, in post
    return self.form_valid(form)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/www/django/src/teams/views/members.py", line 71, in form_valid
    TeamMember.objects.create(team=self.get_object(), user=self.request.user)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/db/models/manager.py", line 87, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/db/models/query.py", line 658, in create
    obj.save(force_insert=True, using=self.db)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/www/django/src/utils/models.py", line 104, in save
    super().save(**kwargs)
    ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/www/django/src/utils/models.py", line 61, in save
    super().save(**kwargs)
    ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/db/models/base.py", line 814, in save
    self.save_base(
    ^
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/db/models/base.py", line 892, in save_base
    post_save.send(
    ^
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/dispatch/dispatcher.py", line 176, in send
    return [
           
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/dispatch/dispatcher.py", line 177, in <listcomp>
    (receiver, receiver(signal=self, sender=sender, **named))
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/www/django/src/teams/signal_handlers.py", line 26, in teammember_saved
    if not add_new_membership_email(instance):
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/www/django/src/teams/email.py", line 60, in add_new_membership_email
    return add_outgoing_email(
           
  File "/usr/local/www/django/src/utils/email.py", line 121, in add_outgoing_email
    email = OutgoingEmail.objects.create(
            
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/db/models/manager.py", line 87, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/virtualenv/lib/python3.11/site-packages/django/db/models/query.py", line 658, in create
    obj.save(force_insert=True, using=self.db)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/www/django/src/utils/models.py", line 52, in save
    self.clean()
    ^^^^^^^^^^^^
  File "/usr/local/www/django/src/utils/models.py", line 172, in clean
    raise ValidationError(
    ^

Exception Type: ValidationError at /bornhack-2026/teams/orga/join/
Exception Value: {'recipient': ['either to_recipient, bcc_recipient or cc_recipient required.']}
Raised during: teams.views.members.TeamJoinView
Request information:
USER: 125ce075-2008-4796-8f46-31fb89d6d7a4

GET: No GET data