Notice: add_submenu_page was called incorrectly…
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Notice: add_submenu_page was called incorrectly…

Notice: add_submenu_page was called incorrectly. The seventh parameter passed to add_submenu_page() should be an integer representing menu position. (This message was added in version 5.3.0.). Der Fehler war erstmal nicht zu finden. Sämtliche add_submenu_page() – Parameter die in den Komponenten vorkamen, waren…