No longer access after login via keycloak (version 1.4.2)

[VolkerHartmann]

Describe the bug
Access to MetaStore fails after creating a token with keycloak.
(Version 1.4.2)
To Reproduce
Steps to reproduce the behavior:

1. Go to a MetaStore instance providing version 1.4.2 and keycloak as login
2. Click on 'login'
3. See error

Expected behavior
It works fine without login. It should also work after login. ;-)
At least there shouldn't be less hits with login.

Screenshots

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.

[github-actions]

Branch issue-495-No_longer_access_after_login_via_keycloak_version_1_4_2 created!

[VolkerHartmann]

Fixed by #500