I have trouble accessing my Wordpress Site, hosted on Godaddy. The following message appears on both the website and admin page:
Fatal error: Call to undefined function add_filter() in /home/username/public_html/wp-includes/default-filters.php on line 17
The problem started after upgrading to the last version of WP. I tried changing the theme to default, changing plugin folder names, none worked. Godaddy charges for restoring backups, but I am wondering whether there is a way to download the xml file myself from somewhere. I would really appreciate your help?
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Radius on "Trouble accessing Website after update"
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