Resolving Bug n°1: several steps (move on to the next step if the previous step does not resolve the bug):
- Recover files via ftp to view lines of code
- Check database hosted by 1&1: export database to 1&1 and check on MyPHPadmin
- Check the settings for the ‘theatre’ child theme
- Reinstall WordPress in case of a corrupted WordPress file
- Study warning messages. The line numbers mentioned contain the mysql_query() and mysql_fetch_array() functions, which have become obsolete in accordance with the new programming standards. These functions therefore need to be updated. They are replaced by the functions $wpdb->prepare and $wpdb->get_results, prepared queries, whose use is important for securing the site
FTP, Database, MyPHPadmin, WordPress installation, Child Theme