Fixed an error in checkBoxes function and uploadContainer "drop" listener regarding file path testing

electron/main/renderer.js

@@ -1,7 +1,5 @@
 
-const dropzone = document.getElementById("uploadContainer");
-
-dropzone.addEventListener("dragover", (e) =>{
+uploadContainer.addEventListener("dragover", (e) =>{
     try {
         e.stopPropagation();
         e.preventDefault();
@@ -12,14 +10,14 @@ dropzone.addEventListener("dragover", (e) =>{
 });
 
 //listener for when a file get dropped on the drag&drop field
-dropzone.addEventListener("drop", (e) => {
+uploadContainer.addEventListener("drop", (e) => {
     try {
         e.stopPropagation()
         e.preventDefault()
         const files = e.dataTransfer.files
         const filePath = window.explorer.onFileDrop(files[0])
         var holdy = filePath + "";
-        if(holdy.endsWith(".mp4", ".mov", ".avi", ".mkv")){
+        if(holdy.endsWith(".mp4") || holdy.endsWith(".mov") || holdy.endsWith(".avi") || holdy.endsWith( ".mkv")){
             console.log(filePath)
 
             const files1 = e.dataTransfer.files;