update

public/index.html

@@ -852,7 +852,7 @@
             document.getElementById('downloadSection').classList.remove('active');
             document.getElementById('registrationSection').classList.remove('active');
             document.getElementsByClassName("button-Contestant")[0].classList.remove('active');
-            document.getElementById('uploadSection').classList.remove.add('active');
+            document.getElementById('uploadSection').classList.remove('active');
             document.getElementById('uploadSection2').classList.add('active');
         });
         let buttonContestant = false