Object of type CharField is not JSON serializable

[ayushin]

Getting this error in the admin, anybody any clue? commenting out no problem: # location =PlainLocationField(based_fields=[street], zoom=7, null=True, blank=True)

Environment:


Request Method: GET
Request URL: http://127.0.0.1:8000/console/machines/aquamachine/ff7917b2-3ebf-1dd2-f4d7-674aaaf3a383/change/

Django Version: 3.0.8
Python Version: 3.7.7
Installed Applications:
['accounts',
 'machines',
 'phonenumber',
 'rest_framework',
 'django_filters',
 'drf_yasg',
 'rest_framework.authtoken',
 'dj_rest_auth',
 'phonenumber_field',
 'mailer',
 'django_extensions',
 'django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'location_field.apps.DefaultConfig']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django_currentuser.middleware.ThreadLocalUserMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'aqua.middleware.HealthCheckMiddleware']


Template error:
In template /Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/contrib/admin/templates/admin/includes/fieldset.html, error at line 19
   Object of type CharField is not JSON serializable
   9 :             {% for field in line %}
   10 :                 <div{% if not line.fields|length_is:'1' %} class="fieldBox{% if field.field.name %} field-{{ field.field.name }}{% endif %}{% if not field.is_readonly and field.errors %} errors{% endif %}{% if field.field.is_hidden %} hidden{% endif %}"{% elif field.is_checkbox %} class="checkbox-row"{% endif %}>
   11 :                     {% if not line.fields|length_is:'1' and not field.is_readonly %}{{ field.errors }}{% endif %}
   12 :                     {% if field.is_checkbox %}
   13 :                         {{ field.field }}{{ field.label_tag }}
   14 :                     {% else %}
   15 :                         {{ field.label_tag }}
   16 :                         {% if field.is_readonly %}
   17 :                             <div class="readonly">{{ field.contents }}</div>
   18 :                         {% else %}
   19 :                              {{ field.field }} 
   20 :                         {% endif %}
   21 :                     {% endif %}
   22 :                     {% if field.field.help_text %}
   23 :                         <div class="help">{{ field.field.help_text|safe }}</div>
   24 :                     {% endif %}
   25 :                 </div>
   26 :             {% endfor %}
   27 :         </div>
   28 :     {% endfor %}
   29 : </fieldset>


Traceback (most recent call last):
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/core/handlers/base.py", line 145, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/core/handlers/base.py", line 143, in _get_response
    response = response.render()
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/response.py", line 105, in render
    self.content = self.rendered_content
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/response.py", line 83, in rendered_content
    return template.render(context, self._request)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/backends/django.py", line 61, in render
    return self.template.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 171, in render
    return self._render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 163, in _render
    return self.nodelist.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/loader_tags.py", line 150, in render
    return compiled_parent._render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 163, in _render
    return self.nodelist.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/loader_tags.py", line 150, in render
    return compiled_parent._render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 163, in _render
    return self.nodelist.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/loader_tags.py", line 62, in render
    result = block.nodelist.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/loader_tags.py", line 62, in render
    result = block.nodelist.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/defaulttags.py", line 209, in render
    nodelist.append(node.render_annotated(context))
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/loader_tags.py", line 188, in render
    return template.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 173, in render
    return self._render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 163, in _render
    return self.nodelist.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/defaulttags.py", line 209, in render
    nodelist.append(node.render_annotated(context))
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/defaulttags.py", line 209, in render
    nodelist.append(node.render_annotated(context))
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/defaulttags.py", line 309, in render
    return nodelist.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/defaulttags.py", line 309, in render
    return nodelist.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 936, in render
    bit = node.render_annotated(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 903, in render_annotated
    return self.render(context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 992, in render
    return render_value_in_context(output, context)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/template/base.py", line 971, in render_value_in_context
    value = str(value)
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/utils/html.py", line 373, in <lambda>
    klass.__str__ = lambda self: mark_safe(klass_str(self))
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/forms/boundfield.py", line 33, in __str__
    return self.as_widget()
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/django/forms/boundfield.py", line 96, in as_widget
    renderer=self.form.renderer,
  File "/Users/alexis/Work/Python/.virtualenvs/aqua/lib/python3.7/site-packages/location_field/widgets.py", line 48, in render
    attrs['data-location-field-options'] = json.dumps(self.options)
  File "/usr/local/Cellar/python/3.7.7/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/__init__.py", line 231, in dumps
    return _default_encoder.encode(obj)
  File "/usr/local/Cellar/python/3.7.7/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/encoder.py", line 199, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/local/Cellar/python/3.7.7/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/encoder.py", line 257, in iterencode
    return _iterencode(o, 0)
  File "/usr/local/Cellar/python/3.7.7/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/encoder.py", line 179, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '

Exception Type: TypeError at /console/machines/aquamachine/ff7917b2-3ebf-1dd2-f4d7-674aaaf3a383/change/
Exception Value: Object of type CharField is not JSON serializable