Bot Dashboard errror

[Diego77648]

Ive added:
Checkauth.js:
module.exports = async (req, res, next) => {
if(!req.session.user){
const redirectURL = ((req.originalUrl.includes("login") || req.originalUrl === "/") ? "/selector" : req.originalUrl);
const state = Math.random().toString(36).substring(5);
req.client.states[state] = redirectURL;
return res.redirect(/api/login?state=${state});
}
return next();
};

But then this error:
[error] Failed to launch dashboard : 'Invalid regular expression flags'