Actually actually fix image url.

src/components/post_status_form/post_status_form.js

@@ -72,7 +72,7 @@ const PostStatusForm = {
           // eslint-disable-next-line camelcase
           screen_name: `:${shortcode}:`,
           name: '',
-          img: image-url
+          img: image_url
         }))
       } else {
         return false

src/main.js

@@ -108,7 +108,7 @@ window.fetch('/static/emoji.txt')
   .then((csv) => {
     const emoji = csv.split('\n').map((row) => {
       const values = row.split(', ')
-      return { shortcode: values[0], image-url: values[1] }
+      return { shortcode: values[0], image_url: values[1] }
     })
     store.dispatch('setOption', { name: 'emoji', value: emoji })
   })