passport-saml authentication throws Error: Request failed with status code 404 after upgrading passport from version 0.5.3 to 0.6.0

[chandra956]

using passport-saml version 3.2.1
after ugrading passportjs from 0.5.3 to 0.6.0 passport authentication throws Error: Request failed with status code 404
saml strategy is also same as I used for 0.5.3

I am trying to call below request
router.post('auth/saml', this.passport.authenticate('saml', {failureRedirect:'/login', keepSessionInfo:true}), this.signInCallback.bind(this));

and below is my signInCallback function
private async _signInCallback(
req: express.Request,
res: express.Response,
next: express.NextFunction,
): Promise<express.Response | void> {
res.redirect('/user/profile');
}