Critical Error updating to PHP 7.3
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Hello, I have a question and would appreciate some help and thanks in advance, I am new and not that technical my site is working fine and I am on PHP 7.2.29 and just on checking site health I have the one issue that say the PHP is old so to upgrade in my host cpanel is easy even for a novice.
Switching to PHP 7.3 I get the message There has been a critical error on your website.
My host only gave me the info
(We have reviewed the error log of the application and it showed that there might be an issue with file wp-db.php on line 1661)They provided some more error messages I do not understand but suggest I contact a DEV, which I might have to as I am so new to this and have no idea.
I changed the directory but here is the rest of the code they provided….If I have to ask a DEV to fix it so be it but if it is something I can be talked through so much better, and once again thanks for any assistance.
[06-Apr-2020 02:05:10 UTC] PHP Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /home/mmmmmmm/public_html/wp-includes/wp-db.php:1661 Stack trace: 0 /home/mmmmmm/public_html/wp-includes/wp-db.php(631): wpdb->db_connect() 1 /home//public_html/wp-includes/load.php(426): wpdb->__construct('mmmmmm_wp746', 'ySQ5p.5[57', 'mmmmmm_wp746', 'localhost') 2 /home/mmmmmm/public_html/wp-settings.php(126): require_wp_db() 3 /home/mmmmmm/public_html/wp-config.php(77): require_once('/home/mmmmmmm/...') 4 /home/mmmmmm/public_html/wp-load.php(37): require_once('/home/formerte/...') 5 /home/mmmmmmm/public_html/wp-blog-header.php(13): require_once('/home/mmmmmm/...') 6 /home/mmmmmm/public_html/index.php(17): require('/home/mmmmmm/...') 7 thrown in /home/mmmmmm/public_html/wp-includes/wp-db.php on line 1661
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