In the local test, I can log in to the background, but not the frontend. Why?

Question

I copied the source code directly on the server, and tested the normal login account operation in the local test background. The front desk can display the home page, but it does not work when I log in to the account. Is it a database problem?

Answer 1

There are many situations where this problem occurs. You have to find the login entrance and troubleshoot it step by step