[تم الحل] Fehler 500 und Fehler im Debug-Mode: ... WPML_LS_Menu_Item::$current is deprecated ...

Hintergrund des Themas:
Auf einer meiner Kundenseiten kommt es immer wieder zum Fehler 500. Im Debug-Mode wurden mir einige Fehler angezeigt. Diese wurden durch Updates behoben, aber anschließend wurden wieder andere Fehler angezeigt. Es bleiben jetzt Fehler bzgl. WPML. Die PHP Version habe ich schon versucht runter zu setzen, der Fehler bleibt allerdings bestehen, weshalb ich sie wieder auf 8.2 gestellt habe.

Hier die Fehlermeldungen:

Deprecated: Creation of dynamic property WPML_LS_Menu_Item::$current is deprecated in /homepages/21/d345764545/htdocs/haute-innovation/wp-includes/nav-menu-template.php on line 394

Deprecated: Creation of dynamic property WPML_LS_Menu_Item::$current is deprecated in /homepages/21/d345764545/htdocs/haute-innovation/wp-includes/nav-menu-template.php on line 394

Deprecated: Creation of dynamic property WPML_LS_Menu_Item::$current_item_ancestor is deprecated in /homepages/21/d345764545/htdocs/haute-innovation/wp-includes/nav-menu-template.php on line 540

Deprecated: Creation of dynamic property WPML_LS_Menu_Item::$current_item_parent is deprecated in /homepages/21/d345764545/htdocs/haute-innovation/wp-includes/nav-menu-template.php on line 541

Deprecated: Creation of dynamic property WPML_LS_Menu_Item::$current_item_ancestor is deprecated in /homepages/21/d345764545/htdocs/haute-innovation/wp-includes/nav-menu-template.php on line 540

Deprecated: Creation of dynamic property WPML_LS_Menu_Item::$current_item_parent is deprecated in /homepages/21/d345764545/htdocs/haute-innovation/wp-includes/nav-menu-template.php on line 541

Deprecated: Creation of dynamic property WPML_LS_Menu_Item::$current is deprecated in /homepages/21/d345764545/htdocs/haute-innovation/wp-includes/nav-menu-template.php on line 394

Deprecated: Creation of dynamic property WPML_LS_Menu_Item::$current is deprecated in /homepages/21/d345764545/htdocs/haute-innovation/wp-includes/nav-menu-template.php on line 394

Deprecated: Creation of dynamic property WPML_LS_Menu_Item::$current_item_ancestor is deprecated in /homepages/21/d345764545/htdocs/haute-innovation/wp-includes/nav-menu-template.php on line 540

Deprecated: Creation of dynamic property WPML_LS_Menu_Item::$current_item_parent is deprecated in /homepages/21/d345764545/htdocs/haute-innovation/wp-includes/nav-menu-template.php on line 541

Deprecated: Creation of dynamic property WPML_LS_Menu_Item::$current_item_ancestor is deprecated in /homepages/21/d345764545/htdocs/haute-innovation/wp-includes/nav-menu-template.php on line 540

Deprecated: Creation of dynamic property WPML_LS_Menu_Item::$current_item_parent is deprecated in /homepages/21/d345764545/htdocs/haute-innovation/wp-includes/nav-menu-template.php on line 541

Die Symptome:
Fehler 500 und Fehler im Debug-Mode: ... WPML_LS_Menu_Item::$current is deprecated ...

Fragen:
Was kann ich tun?