Django rest framework authentication database error - django

Question

I am trying to implement the django rest framework in my current project. The api engine is working with no security. I am trying to follow the steps given in the authentication page of django rest framework to add the authentication.
When I am adding the following section to the settings.py, I don't get any error:
REST_FRAMEWORK = {
'DEFAULT_AUTHENTICATION_CLASSES': [
'rest_framework.authentication.TokenAuthentication',
]
}
but when I am adding 'rest_framework.authtoken' to the INSTALLED_APPS, and run the server,
I get the follwing message:
You have 2 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): authtoken.
Run 'python manage.py migrate' to apply them.
Then I tried running:
python manage.py migrate
and I get the following errors:
(raiotic-venv) username#username-VirtualBox:~/Servers/Repositories/raiotic-venv/raiotic$ python manage.py migrate
Operations to perform:
Apply all migrations: MainApp, admin, auth, authtoken, contenttypes, sessions
Running migrations:
Applying authtoken.0001_initial...Traceback (most recent call last):
File "/home/username/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 82, in _execute
return self.cursor.execute(sql)
File "/home/username/venv/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 381, in execute
return Database.Cursor.execute(self, query)
sqlite3.OperationalError: attempt to write a readonly database
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "manage.py", line 21, in
main()
File "manage.py", line 17, in main
execute_from_command_line(sys.argv)
File "/home/username/venv/lib/python3.6/site-packages/django/core/management/init.py", line 381, in execute_from_command_line
utility.execute()
File "/home/username/venv/lib/python3.6/site-packages/django/core/management/init.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/username/venv/lib/python3.6/site-packages/django/core/management/base.py", line 323, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/username/venv/lib/python3.6/site-packages/django/core/management/base.py", line 364, in execute
output = self.handle(*args, **options)
File "/home/username/venv/lib/python3.6/site-packages/django/core/management/base.py", line 83, in wrapped
res = handle_func(*args, **kwargs)
File "/home/username/venv/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 234, in handle
fake_initial=fake_initial,
File "/home/username/venv/lib/python3.6/site-packages/django/db/migrations/executor.py", line 117, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "/home/username/venv/lib/python3.6/site-packages/django/db/migrations/executor.py", line 147, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "/home/username/venv/lib/python3.6/site-packages/django/db/migrations/executor.py", line 245, in apply_migration
state = migration.apply(state, schema_editor)
File "/home/username/venv/lib/python3.6/site-packages/django/db/migrations/migration.py", line 124, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "/home/username/venv/lib/python3.6/site-packages/django/db/migrations/operations/models.py", line 92, in database_forwards
schema_editor.create_model(model)
File "/home/username/venv/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 307, in create_model
self.execute(sql, params or None)
File "/home/username/venv/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 137, in execute
cursor.execute(sql, params)
File "/home/username/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 99, in execute
return super().execute(sql, params)
File "/home/username/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 67, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/home/username/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 76, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/home/username/venvlib/python3.6/site-packages/django/db/backends/utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "/home/username/venvlib/python3.6/site-packages/django/db/utils.py", line 89, in exit
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/home/username/venvlib/python3.6/site-packages/django/db/backends/utils.py", line 82, in _execute
return self.cursor.execute(sql)
File "/home/username/venvlib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 381, in execute
return Database.Cursor.execute(self, query)
django.db.utils.OperationalError: attempt to write a readonly database

Answer 1

try changing the permissions to the db.sqlite3 file it might be that the mode is read only for the user you are running as having no permissions to write to the file.
do
ls -al db.sqlite3
chmod a+w db.sqlite3
python manage.py migrate