Update footer.js

Author: NDevTK

js/footer.js

@@ -94,8 +94,12 @@ themes.onchange = async () => {
     )
   ) {
     localStorage.setItem('theme', themes.value);
-    if (themes.value == 'summarizer.css')
+    
+    if (themes.value == 'summarizer.css') {
+      document.body.innerText = 'Please wait loading AI model...';
       await Summarizer.create(writeupsContext);
+    }
+      
     reloadAll();
   } else {
     // Revert UI