diff --git a/public/react/src/modules/user/modal/RealNameCertificationModal.js b/public/react/src/modules/user/modal/RealNameCertificationModal.js
index bdd2270ae..1d17b7c20 100644
--- a/public/react/src/modules/user/modal/RealNameCertificationModal.js
+++ b/public/react/src/modules/user/modal/RealNameCertificationModal.js
@@ -132,7 +132,7 @@ class RealNameCertificationModal extends Component{
       multiple: true,
       showUploadList: false,
       // https://newweb.educoder.net
-      action: `/api/users/accounts/${this.props.current_user.login}/auth_attachment.json`,
+      action: this.props.current_user ? `/api/users/accounts/${this.props.current_user.login}/auth_attachment.json` : '',
       className: 'idPic-uploader',
       onChange: this.handleChange2,
     };