Could not create the rucss_used_css table

Could not create the rucss_used_css table in the database which is necessary for the Remove Unused CSS feature to work.

There are a few reasons you may see this error. Please check the following to identify the cause:

1. Contact your host to make sure that WP Rocket can create new tables in your database. It usually happens when the WordPress MySQL user, doesn't have all the permissions. We specifically need to use the ALTER TABLE command.
2. Check your PHP error log for the specific error that is occurring.
   Ask your host for the error log file, or enable error logging in WordPress.

• If you see an Unknown column error, please read this guide: Database error unknown column.
• If you see the error WordPress database error Unknown character set, there could be an issue with the database collation.
  

  Warning: Do not make changes without backing up your database first.

  Check your wp-config.php for a line beginning:
  define( 'DB_CHARSET'
  Make sure you are using a supported value. The typical value is: utf8

For other errors, please contact our Support team and provide us with the error log.