django.db.utils.OperationalError: (2003, "Can't connect to MySQL server on '127.0.0.1' (111)")

This error message indicates that the Django application is unable to connect to the MySQL server running on the local machine at IP address 127.0.0.1. The error code 111 suggests that the connection was refused, possibly due to a misconfiguration or a network issue.

To resolve this issue, you can try the following steps:

1. Check if the MySQL server is running and accessible from the local machine. You can use the command line tool `mysql` to connect to the server and verify its status.

2. Verify the connection settings in the Django settings file (`settings.py`). Make sure that the database name, user, password, and host are correctly configured.

3. Check if there are any firewall rules or security settings that might be blocking the connection. You may need to open the necessary ports or grant permissions to the MySQL server.

4. If you are using a virtual environment or container, make sure that the MySQL client library is installed and accessible.

5. Try restarting the MySQL server and/or the Django application to see if the connection issue is resolved.