错误：错误错误：未捕获（承诺）：[对象布尔]

Question

When there is no session when I go on an incognito tab and then redirect or open URL http://localhost:4200/#/ it returns me error ERROR Error: Uncaught (in promise): [object Boolean]

when I open the URL it should go directly to login page , what causes the error ? any idea? is this because of the get session ?

#getsession

 public getSession(): Promise<boolean> {
    const session = localStorage.getItem(tokenName);
    return new Promise((resolve, reject) => {
      if (session) {
        return resolve(true);
      } else {
        return reject(false);
      }
    });
  }

#Code

 private checkPermission(allowedUserRoles: Roles[]): Promise<boolean> {
    return this.authService.getSession().then((session: boolean) => {
      if (session && this.authService.isTokenValid) {
        this.route.navigateByUrl('/login');
        if (!allowedUserRoles) {
          this.route.navigateByUrl('/login');
          return true;   // if no user roles has been set, all user are allowed to access the route
        } else {
          return this.authService.getUserRoles().then((userRoles: string[]) => {
            if (this.authService.areUserRolesAllowed(userRoles, allowedUserRoles)) {
              return true;
            } else {
              this.route.navigateByUrl('/transactions');
              return false;
            }
          });
        }
      } else { 
        this.route.navigateByUrl('/login');
        return false ;
      }
    });
  }

#code 2

constructor(private authService: AuthService, private route: Router,) {}

  public async canActivate(route: ActivatedRouteSnapshot): Promise<boolean> {
    const allowedUserRoles = this.getRoutePermissions(route);
    return await this.checkPermission(allowedUserRoles);
  }

#getting token

 isTokenValid(){
    if(localStorage.getItem(tokenName)){      
      return true;
    }
    return false;
  }

Answer 1

When there is no session when I go on an incognito tab and then redirect or open URL http://localhost:4200/#/ it returns me error ERROR Error: Uncaught (in promise): [object Boolean]

when I open the URL it should go directly to login page , what causes the error ? any idea? is this because of the get session ?

#getsession

 public getSession(): Promise<boolean> {
    const session = localStorage.getItem(tokenName);
    return new Promise((resolve, reject) => {
      if (session) {
        return resolve(true);
      } else {
        return reject(false);
      }
    });
  }

#Code

 private checkPermission(allowedUserRoles: Roles[]): Promise<boolean> {
    return this.authService.getSession().then((session: boolean) => {
      if (session && this.authService.isTokenValid) {
        this.route.navigateByUrl('/login');
        if (!allowedUserRoles) {
          this.route.navigateByUrl('/login');
          return true;   // if no user roles has been set, all user are allowed to access the route
        } else {
          return this.authService.getUserRoles().then((userRoles: string[]) => {
            if (this.authService.areUserRolesAllowed(userRoles, allowedUserRoles)) {
              return true;
            } else {
              this.route.navigateByUrl('/transactions');
              return false;
            }
          });
        }
      } else { 
        this.route.navigateByUrl('/login');
        return false ;
      }
    });
  }

#code 2

constructor(private authService: AuthService, private route: Router,) {}

  public async canActivate(route: ActivatedRouteSnapshot): Promise<boolean> {
    const allowedUserRoles = this.getRoutePermissions(route);
    return await this.checkPermission(allowedUserRoles);
  }

#getting token

 isTokenValid(){
    if(localStorage.getItem(tokenName)){      
      return true;
    }
    return false;
  }