Проблема с базой данных django orm: база не найдена

я изучаю django а конкретно базы данных ORM. В models.py написал:

from django.db import models

class My_Table(models.Model):
    title = models.CharField(max_length=255)
    content = models.TextField()
    creation_date = models.DateTimeField(blank=True)
    def __str__(self):
        return self.title
    class Meta:
        ordering = ['-title']
        app_label="myp"

затем сделал makemigrations (сначала просто так, потом с именем приложения) и migrate. Потом попытался сделать запрос в базу с объявленными ранее title и content:

new = My_Table(title=title,content=content)
new.save()

и мне выдало ошибку:

Internal Server Error: /app/db_ins/ Traceback (most recent call last): File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/usr/lib/python3/dist-packages/django/db/backends/sqlite3/base.py", line 383, in execute return Database.Cursor.execute(self, query, params) sqlite3.OperationalError: no such table: app_my_table

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

Traceback (most recent call last): File "/usr/lib/python3/dist-packages/django/core/handlers/exception.py", line 34, in inner response = get_response(request) File "/usr/lib/python3/dist-packages/django/core/handlers/base.py", line 115, in _get_response response = self.process_exception_by_middleware(e, request) File "/usr/lib/python3/dist-packages/django/core/handlers/base.py", line 113, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/web-project/myp/app/views.py", line 39, in db_insert new.save() File "/usr/lib/python3/dist-packages/django/db/models/base.py", line 743, in save self.save_base(using=using, force_insert=force_insert, File "/usr/lib/python3/dist-packages/django/db/models/base.py", line 780, in save_base updated = self._save_table( File "/usr/lib/python3/dist-packages/django/db/models/base.py", line 873, in _save_table result = self._do_insert(cls._base_manager, using, fields, update_pk, raw) File "/usr/lib/python3/dist-packages/django/db/models/base.py", line 910, in _do_insert return manager._insert([self], fields=fields, return_id=update_pk, File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 82, in manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 1186, in _insert return query.get_compiler(using=using).execute_sql(return_id) File "/usr/lib/python3/dist-packages/django/db/models/sql/compiler.py", line 1377, in execute_sql cursor.execute(sql, params) File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 99, in execute return super().execute(sql, params) File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 67, in execute return self._execute_with_wrappers(sql, params, many=False, executor=self._execute) File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 76, in _execute_with_wrappers return executor(sql, params, many, context) File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/usr/lib/python3/dist-packages/django/db/utils.py", line 89, in exit raise dj_exc_value.with_traceback(traceback) from exc_value File "/usr/lib/python3/dist-packages/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/usr/lib/python3/dist-packages/django/db/backends/sqlite3/base.py", line 383, in execute return Database.Cursor.execute(self, query, params) django.db.utils.OperationalError: no such table: app_my_table

вырезка из моего settings.py:

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    },
    'myp_my_table' : {
        'ENGINE' : 'django.db.backends.postgresql',
        'NAME' : 'myp_my_table',
        'HOST' : '127.0.0.1',
        'PORT' : '8000',
    },
}