I feel dumb

So you want to tell me, that all of this trouble was just because I didn't really comment out something? SRSLY?

create.php

@@ -225,11 +225,13 @@
            li.textContent = name;
            return li;
     }
-
+/*
     function updateGoodRoles() {
        goodRoles = $('#goodRoles').val();
        goodRoles.forEach(element => document.getElementById("tplaysbestwith").appendChild(createMenuItem(element)); )
     }
+
+    */
     function updateDescription() {
       document.getElementById("carddescription").innerHTML = $('#description').val();
     }