Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/alejan95/public_html/instrumentalia/wp-config.php:79 Stack trace: #0 /home/alejan95/public_html/instrumentalia/wp-load.php(37): require_once() #1 /home/alejan95/public_html/instrumentalia/wp-blog-header.php(13): require_once('/home/alejan95/...') #2 /home/alejan95/public_html/instrumentalia/index.php(17): require('/home/alejan95/...') #3 {main} thrown in /home/alejan95/public_html/instrumentalia/wp-config.php on line 79