i'm just getting started with django and followed a tutorial. imitated every step but keep getting this error

t = ToDoList(name="tim") t.save() Traceback (most recent call last): File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\backends\utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\backends\sqlite3\base.py", line 413, in execute return Database.Cursor.execute(self, query, params) sqlite3.OperationalError: no such table: main_todolist

The above exception was the direct cause of the following exception:

Traceback (most recent call last): File "", line 1, in File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\models\base.py", line 750, in save self.save_base(using=using, force_insert=force_insert, File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\models\base.py", line 787, in save_base updated = self._save_table( File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\models\base.py", line 892, in _save_table results = self._do_insert(cls._base_manager, using, fields, returning_fields, raw) File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\models\base.py", line 930, in _do_insert return manager._insert( File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\models\manager.py", line 85, in manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\models\query.py", line 1249, in _insert return query.get_compiler(using=using).execute_sql(returning_fields) File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\models\sql\compiler.py", line 1395, in execute_sql cursor.execute(sql, params) File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\backends\utils.py", line 98, in execute return super().execute(sql, params) File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\backends\utils.py", line 66, in execute return self._execute_with_wrappers(sql, params, many=False, executor=self._execute) File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\backends\utils.py", line 75, in _execute_with_wrappers return executor(sql, params, many, context) File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\backends\utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\utils.py", line 90, in exit raise dj_exc_value.with_traceback(traceback) from exc_value File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\backends\utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "C:\Users\Saman\AppData\Local\Programs\Python\Python38\lib\site-packages\django\db\backends\sqlite3\base.py", line 413, in execute return Database.Cursor.execute(self, query, params) django.db.utils.OperationalError: no such table: main_todolist