Opening a page protected by AuthService in multiple tabs while logged out will produce an error during login about oidc-authservice HOT 2 OPEN

func (s *server) callback(w http.ResponseWriter, r *http.Request) {
	...
	// check current session
	if session, err := s.store.Get(r, userSessionCookie); err != nil {
		logger.Errorf("Failed to get session: %v", err)
	} else if !session.IsNew {
		// session already exists, which means the user already logged in
		destination := ""
		if s.afterLoginRedirectURL != "" {
			// Redirect to a predefined url from config.
			afterLoginRedirectURL := mustParseURL(s.afterLoginRedirectURL)
			destination = afterLoginRedirectURL.String()
		}
		logger.WithField("redirectTo", destination).
		Info("User already logged in, redirecting.")
		http.Redirect(w, r, destination, http.StatusFound)
		return
	}
	...