Implemented the function for the download button.

electron/main/script.js

@@ -105,7 +105,6 @@ function changeLanguage(language) {
 function handleFiles(files) {
   try {
     if (files.length > 0) {
-      document.getElementById("progressbar").style.visibility = "visible";
       const file = files[0];
       if (file.type.startsWith('video/')) {
         const filePath = window.explorer.onFileDrop(files[0])
@@ -330,3 +329,10 @@ function sendSpeakerPackages(){
   }
 }
 
+function fileDownload(){
+  try {
+    window.file_download.fileDownload();
+  } catch (error) {
+    
+  }
+}