首次登陆，密码记录修改

server/controller/SocketMonitor.js

@@ -22,7 +22,7 @@ const sendMsg = (req, res) => {
           if (_json.action === 'sendAuth' && _json.info) { // 获取本地用户基本数据 - sendAuth
             _str = Buffer.from(_json.info, 'base64').toString()
             if (!_pwd) {
-              _pwd = _str.split(':')[5]
+              _pwd = Buffer.from(_str.split(':')[5] || '', 'base64').toString()
             }
           }
         }