Merhabalar.
Taşıma sonrası sitede hata alıyorum bu hatalar neyden kaynaklı ?
Php sürümünü 7.4 yaptım yine düzelmedi.Wp config'den hata bilgisini açtım

Notice: Undefined variable: file in /home/guzelbilgi/public_html/wp-content/plugins/fix-my-feed-rss-repair/rss-feed-fixr.php on line 14

Deprecated: Function create_function() is deprecated in /home/guzelbilgi/public_html/wp-content/themes/spixer/inc/widgets/sp-module-authors.php on line 155

Notice: Only variables should be passed by reference in /home/guzelbilgi/public_html/wp-content/themes/spixer/admin/ot-loader.php on line 331

En altta da aşağdaki hata var

Warning: Cannot modify header information - headers already sent by (output started at /home/guzelbilgi/public_html/wp-content/plugins/fix-my-feed-rss-repair/rss-feed-fixr.php:14) in /home/guzelbilgi/public_html/wp-content/plugins/litespeed-cache/src/vary.cls.php on line 724