fix js errors

app/controllers/template_documents_controller.rb

@@ -4,7 +4,9 @@ class TemplateDocumentsController < ApplicationController
   load_and_authorize_resource :template
 
   def create
-    return head :unprocessable_entity if params[:blobs].blank? && params[:files].blank?
+    if params[:blobs].blank? && params[:files].blank?
+      return render json: { error: 'File is missing' }, status: :unprocessable_entity
+    end
 
     old_fields_hash = @template.fields.hash
 

app/javascript/elements/download_button.js

@@ -17,7 +17,9 @@ export default targetable(class extends HTMLElement {
 
     this.toggleState()
 
-    fetch(this.dataset.src).then((response) => response.json()).then((urls) => {
+    fetch(this.dataset.src).then(async (response) => {
+      if (response.ok) {
+        const urls = await response.json()
         const isSafariIos = /iPhone|iPad|iPod/i.test(navigator.userAgent)
 
         if (isSafariIos && urls.length > 1) {
@@ -25,6 +27,9 @@ export default targetable(class extends HTMLElement {
         } else {
           this.downloadUrls(urls)
         }
+      } else {
+        alert('Failed to download files')
+      }
     })
   }
 

app/javascript/submission_form/completed.vue

@@ -197,7 +197,9 @@ export default {
     download () {
       this.isDownloading = true
 
-      fetch(this.baseUrl + `/submitters/${this.submitterSlug}/download`).then((response) => response.json()).then((urls) => {
+      fetch(this.baseUrl + `/submitters/${this.submitterSlug}/download`).then(async (response) => {
+        if (response.ok) {
+          const urls = await response.json()
           const isSafariIos = /iPhone|iPad|iPod/i.test(navigator.userAgent)
 
           if (isSafariIos && urls.length > 1) {
@@ -205,6 +207,9 @@ export default {
           } else {
             this.downloadUrls(urls)
           }
+        } else {
+          alert('Failed to download files')
+        }
       })
     },
     downloadUrls (urls) {

app/javascript/submission_form/form.vue

@@ -972,6 +972,7 @@ export default {
       this.$nextTick(() => {
         this.recalculateButtonDisabledKey = Math.random()
 
+        if (!this.isCompleted) {
           if (scrollToArea) {
             this.scrollIntoField(step[0])
 
@@ -981,6 +982,7 @@ export default {
           if (clickUpload && !this.values[this.currentField.uuid] && ['file', 'image'].includes(this.currentField.type)) {
             this.$refs.form.querySelector('input[type="file"]')?.click()
           }
+        }
       })
     },
     saveStep (formData) {