bug fixes

src/utils/axios.js

@@ -19,11 +19,11 @@ httpRequest.interceptors.request.use(
       config.data = qs.stringify(config.data)
     }
     if (config.headers['Content-Type'] === 'multipart/form-data') {
-      const params = new URLSearchParams()
+      const form = new window.FormData()
       for (const key in config.data) {
-        params.append('key', config.data[key])
+        form.append(key, config.data[key])
       }
-      params.data = params
+      config.data = form
     }
     return config
   },