form a proper error message when teamAuth is invalid
form a proper error message when teamAuth is invalid

Signed-off-by: Syamala Umamaheswaran <shyam@oss.volkswagen.com>

Co-authored-by: Lukas Benedix <7c1445340510799e5711a6dfeeb4a4cd9e5bcc48@oss.volkswagen.com>

concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse