OperationalError at /admin/login/attempt to write a readonly database

Hello , I started learning how to use django . I made a project without a virtual environnement and without apach2 andn mod wsgi .

Now am I trying to do a project with those ones . I am a beginner .When I try to log in to the administration interface, the error below appears.I've been looking for solutions on the internet for hours and hours but I didn't find anything which can help me to solve my problem. I have no idea what could have caused this error.I really need help, it's urgent. I wish someone can answer to me in french but if it is not possible, help me anyway, I will manage.

OperationalError at /admin/login/

attempt to write a readonly database

Request Method:	POST
Request URL:	http://www.djangoproject.localhost/admin/login/?next=/admin/
Django Version:	3.0.5
Exception Type:	OperationalError
Exception Value:	attempt to write a readonly database
Exception Location:	/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/backends/sqlite3/base.py in execute, line 396
Python Executable:	/home/kirikou/mysite/env/bin/python
Python Version:	3.7.5
Python Path:	['/home/kirikou/mysite', '/usr/lib/python37.zip', '/usr/lib/python3.7', '/usr/lib/python3.7/lib-dynload', '/home/kirikou/mysite/env/lib/python3.7/site-packages']
Server time:	Sat, 2 May 2020 21:39:20 +0000

Environment:


Request Method: POST
Request URL: http://www.djangoproject.localhost/admin/login/?next=/admin/

Django Version: 3.0.5
Python Version: 3.7.5
Installed Applications:
['applis.apps.ApplisConfig',
 'django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.admindocs']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']



Traceback (most recent call last):
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/backends/utils.py", line 86, in _execute
    return self.cursor.execute(sql, params)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/backends/sqlite3/base.py", line 396, in execute
    return Database.Cursor.execute(self, query, params)

The above exception (attempt to write a readonly database) was the direct cause of the following exception:
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/core/handlers/base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/core/handlers/base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/views/decorators/cache.py", line 44, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/contrib/admin/sites.py", line 407, in login
    return LoginView.as_view(**defaults)(request)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/views/generic/base.py", line 71, in view
    return self.dispatch(request, *args, **kwargs)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/utils/decorators.py", line 43, in _wrapper
    return bound_method(*args, **kwargs)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/views/decorators/debug.py", line 76, in sensitive_post_parameters_wrapper
    return view(request, *args, **kwargs)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/utils/decorators.py", line 43, in _wrapper
    return bound_method(*args, **kwargs)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/utils/decorators.py", line 130, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/utils/decorators.py", line 43, in _wrapper
    return bound_method(*args, **kwargs)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/views/decorators/cache.py", line 44, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/contrib/auth/views.py", line 63, in dispatch
    return super().dispatch(request, *args, **kwargs)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/views/generic/base.py", line 97, in dispatch
    return handler(request, *args, **kwargs)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/views/generic/edit.py", line 142, in post
    return self.form_valid(form)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/contrib/auth/views.py", line 92, in form_valid
    auth_login(self.request, form.get_user())
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/contrib/auth/__init__.py", line 107, in login
    request.session.cycle_key()
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/contrib/sessions/backends/base.py", line 310, in cycle_key
    self.create()
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/contrib/sessions/backends/db.py", line 55, in create
    self.save(must_create=True)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/contrib/sessions/backends/db.py", line 87, in save
    obj.save(force_insert=must_create, force_update=not must_create, using=using)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/models/base.py", line 746, in save
    force_update=force_update, update_fields=update_fields)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/models/base.py", line 784, in save_base
    force_update, using, update_fields,
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/models/base.py", line 887, in _save_table
    results = self._do_insert(cls._base_manager, using, fields, returning_fields, raw)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/models/base.py", line 926, in _do_insert
    using=using, raw=raw,
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/models/manager.py", line 82, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/models/query.py", line 1204, in _insert
    return query.get_compiler(using=using).execute_sql(returning_fields)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/models/sql/compiler.py", line 1391, in execute_sql
    cursor.execute(sql, params)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/backends/utils.py", line 100, in execute
    return super().execute(sql, params)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/backends/utils.py", line 68, in execute
    return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/backends/utils.py", line 77, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/backends/utils.py", line 86, in _execute
    return self.cursor.execute(sql, params)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/utils.py", line 90, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/backends/utils.py", line 86, in _execute
    return self.cursor.execute(sql, params)
  File "/home/kirikou/mysite/env/lib/python3.7/site-packages/django/db/backends/sqlite3/base.py", line 396, in execute
    return Database.Cursor.execute(self, query, params)

Exception Type: OperationalError at /admin/login/
Exception Value: attempt to write a readonly database

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