bug: 500 error if absent redirect_uri in object for fapi (caught by fapi1-advanced-final-ensure-request-object-without-redirect-uri-fails, fapi1-advanced-final-ensure-redirect-uri-in-authorization-request)

[yuriyz]

Describe the bug
bug: 500 error if absent redirect_uri in object for fapi (caught by fapi1-advanced-final-ensure-request-object-without-redirect-uri-fails, fapi1-advanced-final-ensure-redirect-uri-in-authorization-request)

[yuriyz]

Test is passed now, issue is fixed. Closing ticket.