diff --git a/pages/collections/upload.tsx b/pages/collections/upload.tsx
index dd9cf24..51dd5ba 100644
--- a/pages/collections/upload.tsx
+++ b/pages/collections/upload.tsx
@@ -80,9 +80,11 @@ const UploadPage: NextPage = () => {
     if (event.target.files === null) return toast.error('No files selected.')
     for (let i = 0; i < event.target.files.length; i++) {
       reader = new FileReader()
-      reader.onload = function (e) {
+      reader.onload = async function (e) {
         if (!e.target?.result) return toast.error('Error parsing file.')
         if (!event.target.files) return toast.error('No files selected.')
+        if (!JSON.parse(await event.target.files[i].text()).attributes)
+          return toast.error(`The file with name '${event.target.files[i].name}' doesn't have attributes list!`)
         const metadataFile = new File([e.target.result], event.target.files[i].name, { type: 'application/json' })
         setMetadataFilesArray((prev) => [...prev, metadataFile])
       }
@@ -422,7 +424,7 @@ const UploadPage: NextPage = () => {
                   metadataFile={metadataFilesArray[metadataFileArrayIndex]}
                   refresher={refreshMetadata}
                   updateMetadata={updateMetadataFileArray}
-                  updatedMetadataFile={updatedMetadataFilesArray[metadataFileArrayIndex]}
+                  updatedMetadataFile={updatedMetadataFilesArray[0]}
                 />
               </div>
               {imageFilesArray.length > 0 && (