Gitlab Jira integration, validations failed


We’re trying to integrate Jira to our GitLab project (import/export or reference issues). We have Jira v7.12.1 and GitLab Enterprise Edition 11.2.1-ee.

When I follow the instructions on I keep getting the error Validations failed. Url is blocked: Requests to localhost are not allowed

Has anyone experienced a similar problem?
Thanks in advance for the help.

Did you got Solution …??