Update static/frontend.js

static/frontend.js

@@ -70,7 +70,7 @@
         return predictions.json()
       } else{
         document.getElementById("spinner").style.display = 'none';
-        let error_msg = "Error, return code" + predicitons.status
+        let error_msg = "Error, return code" + predictions.status
         alert(error_msg);
       }