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Error: HTTP Error 403.
Solution: confirm the existence of the index.php file.
Error: HTTP Error 404.
Solution: confirm the existence of the index.php file.
Error: HTTP Error 405.
Solution: set to allow post static files.
Error: HTTP Error 500.
Solution: update PHP.
Error: database does not exist.
Solution: create a database of settings.
Error: unable to connect to database.
Solution: start the database server.
Error: login failed: access denied.
Solution: check whether the database user name and password are correct.
Error: login failed: not allowed.
Solution: add parameters: skip permission table check.
Error: login failed: system error.
Solution: make sure the database and server are running properly.
Error: login failed: invalid return value.
Solution: restart the database.
Error: unable to update file xxx, access denied.
Solution: set the permissions of the file or run the server with an administrator account.
Error: calibration failed.
Solution: re-download or turn off the force check file consistency option.
Please look forward to more errors and solutions