diff --git a/components/IscnUploadForm.vue b/components/IscnUploadForm.vue
index 2f7a831f..16e298ab 100644
--- a/components/IscnUploadForm.vue
+++ b/components/IscnUploadForm.vue
@@ -709,7 +709,9 @@ export default class UploadForm extends Vue {
         this.sentArweaveTransactionInfo.set(records.ipfsHash, { ...uploadedData, arweaveId });
         if (tempRecord.fileName.includes('cover.jpeg')) {
           const metadata = this.epubMetadataList.find((file: any) => file.ipfsHash === records.ipfsHash)
-          metadata.thumbnailUrl = arweaveId
+          if (metadata && metadata.thumbnailUrl) {
+            metadata.thumbnailUrl = arweaveId
+          }
         }
         this.$emit('arweaveUploaded', { arweaveId })
         this.isOpenSignDialog = false
diff --git a/components/SameAsFieldList.vue b/components/SameAsFieldList.vue
index 73a56370..b6c0e60e 100644
--- a/components/SameAsFieldList.vue
+++ b/components/SameAsFieldList.vue
@@ -122,7 +122,7 @@ export default class WalletFieldList extends Vue {
     if (this.currentList.length) {
       this.sameAsList = this.currentList.map((list) => ({
         url: list.url,
-        id: `${list.url}-${list.filename}`,
+        id: `$submitToArweave{list.url}-${list.filename}`,
         filename: list.filename,
         filetype: list.filetype || SAME_AS_FILE_TYPES[0],
         originFileName: list.originFileName,