I am trying to connect my Django application to PostgreSQL running in a Docker container, but when I execute python manage.py runserver or python manage.py makemigrations, I get the following error:

System check identified 3 issues (0 silenced).
Exception in thread django-main-thread:
Traceback (most recent call last):
  File "C:\Users\Usuario\AppData\Local\Programs\Python\Python312\Lib\threading.py", line 1073, in _bootstrap_inner
    self.run()
  File "C:\Users\Usuario\AppData\Local\Programs\Python\Python312\Lib\threading.py", line 1010, in run
    self._target(*self._args, **self._kwargs)
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\utils\autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\core\management\commands\runserver.py", line 137, in inner_run
    self.check_migrations()
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\core\management\base.py", line 581, in check_migrations
    executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\db\migrations\executor.py", line 18, in __init__
    self.loader = MigrationLoader(self.connection)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\db\migrations\loader.py", line 58, in __init__
    self.build_graph()
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\db\migrations\loader.py", line 235, in build_graph
    self.applied_migrations = recorder.applied_migrations()
                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\db\migrations\recorder.py", line 89, in applied_migrations
    if self.has_table():
       ^^^^^^^^^^^^^^^^
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\db\migrations\recorder.py", line 63, in has_table
    with self.connection.cursor() as cursor:
         ^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\utils\asyncio.py", line 26, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\db\backends\base\base.py", line 320, in cursor
    return self._cursor()
           ^^^^^^^^^^^^^^
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\db\backends\base\base.py", line 296, in _cursor
    self.ensure_connection()
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\utils\asyncio.py", line 26, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\db\backends\base\base.py", line 279, in ensure_connection
    self.connect()
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\utils\asyncio.py", line 26, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\db\backends\base\base.py", line 256, in connect
    self.connection = self.get_new_connection(conn_params)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\utils\asyncio.py", line 26, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\django\db\backends\postgresql\base.py", line 332, in get_new_connection
    connection = self.Database.connect(**conn_params)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Cositas\Python\Emergentes\env\Lib\site-packages\psycopg2\__init__.py", line 122, in connect
    conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xf3 in position 85: invalid continuation byte

What I've tried:

• Verified that the database uses UTF-8.
• Deleted and recreated the database in Docker with UTF-8.
• Tested with both psycopg2 and psycopg2-binary.
• Checked for special characters in my configuration.
• Deleted and reinstalled my virtual environment.

What else can I check to resolve this error? Could there be some data in the database causing this issue? How can I debug which exact byte is triggering this error in PostgreSQL?