pymysql.err.InterfaceError: (0, '')

This error message indicates that there was a problem with the interface between your Python code and the MySQL database.

The error code 0 typically means that there was no specific error message provided, which can make it difficult to diagnose the issue. However, some common causes of this error include:

- Incorrect database credentials: Double-check that you are using the correct username, password, and database name to connect to the MySQL server.
- Connection issues: Make sure that the MySQL server is running and that you have network connectivity to it. Check for any firewall or networking issues that may be preventing your Python code from connecting to the MySQL server.
- Incorrect SQL syntax: If you are executing SQL queries from your Python code, make sure that the syntax of the query is correct and that all necessary parameters are provided.

To troubleshoot this error further, try printing out more detailed error messages or enabling debugging mode in your Python code. You may also want to check the MySQL server logs for any error messages related to the connection.