- Backdrop disabled – background remains blocked
- Caching and optimisation systems
- Debug Console – Test results explained
- Error message: Access to XMLHttpRequest at ... has been blocked by CORS policy
- Error message: ftp_nlist: Argument 1 (Sftp) must be of type FTP\Connection, null given
- Error message: Incompatible archive
- Error message: Incorrect table name or identifier name ... is too long
- Error message: Index column size too large...
- Error message: PHP Fatal error: Uncaught TypeError
- Error message: PHP Fatal error: Uncaught TypeError ... Argument #2 ($data) must be of type array, null given
- Error message: The request could not be authorised.
- First aid
- Folder Permissions
- Packages are not being installed
- Scanner does not scan all pages
- WP-Cron events are overdue
