fix: reference error input

static/script.js

@@ -52,7 +52,7 @@ const inputImg = document.querySelector('img-input');
 const outputImg = document.querySelector('img-output');
 let imageArray = [];
 
-input.addEventListener("change", event =>{
+inputImg.addEventListener("change", event =>{
   const files = event.target.files;
   res = "aaa"
   res = submitImages(files);