I am getting error during deployment to CF while setting Admin credentials ...Incorrect Usage: unexpected argument

[PorasPete]

Hello, I've deployed Postfacto to cloud foundry but unable to access admin dashboard, getting error invalid email or password, both using my custom email/password or default ones. During deployment, I used ADMIN_EMAIL=[email protected] ADMIN_PASSWORD=xyz ./deploy.sh my-retro-app, deployment was successful but I received message
Incorrect Usage: unexpected argument "ADMIN_EMAIL=[email protected] ADMIN_PASSWORD=xyz rake admin:create_user"
FAILED
i tried to access admin dasboard using both emails and respective passwords (custom and default) but keep getting error invalid email or password
Please advise how to access admin dashboard, thanks