Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method wp_meta_keywords_plugin::meta_keywords_textdomain() cannot be called statically in /home/fridayfl/public_html/wp-includes/class-wp-hook.php:324 Stack trace: #0 /home/fridayfl/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(Object(RegenerateThumbnails), Array) #1 /home/fridayfl/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #2 /home/fridayfl/public_html/wp-settings.php(727): do_action('init') #3 /home/fridayfl/public_html/wp-config.php(95): require_once('/home/fridayfl/...') #4 /home/fridayfl/public_html/wp-load.php(50): require_once('/home/fridayfl/...') #5 /home/fridayfl/public_html/wp-blog-header.php(13): require_once('/home/fridayfl/...') #6 /home/fridayfl/public_html/index.php(17): require('/home/fridayfl/...') #7 {main} thrown in /home/fridayfl/public_html/wp-includes/class-wp-hook.php on line 324