Fatal error: Cannot use "self" when no class scope is active in /home/inside59/public_html/wp-content/plugins/wp-to-twitter/wpt-functions.php on line 122

Fatal error: Uncaught Error: Call to undefined function is_user_logged_in() in /home/inside59/public_html/wp-content/plugins/wp-fastest-cache/inc/cache.php:515 Stack trace: #0 [internal function]: WpFastestCacheCreateCache->callback('<br />\n<b>Fatal...', 9) #1 /home/inside59/public_html/wp-includes/functions.php(3782): ob_end_flush() #2 /home/inside59/public_html/wp-includes/class-wp-hook.php(286): wp_ob_end_flush_all('') #3 /home/inside59/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters('', Array) #4 /home/inside59/public_html/wp-includes/plugin.php(453): WP_Hook->do_action(Array) #5 /home/inside59/public_html/wp-includes/load.php(679): do_action('shutdown') #6 [internal function]: shutdown_action_hook() #7 {main} thrown in /home/inside59/public_html/wp-content/plugins/wp-fastest-cache/inc/cache.php on line 515