修复 ImagePostEdit.vue 图片上传的 url

src/views/post/ImagePostEdit.vue

@@ -8,6 +8,7 @@
         </div>
         <div class="text item">
           <el-upload
+            v-if="actionUrl !== null"
             :action="actionUrl"
             :headers="imgHeaders"
             :data="imgData"