500 error when migrating the joomla site between servers

Steps: 1. download the all the files from the original server. 2. export the db using to a sql file. 3. upload the files to the new server. 4. create mysql db and new db user in the new server.import the exported sql to the newly created db. 5. edit the configuration.php. modify┬áthe user/dbname/password to…