Katalon does not finishes the tests in Gitlab

Hello people,
In in a scenario: We have an API and we have made a katalon project to test this API. The API executes flawlessly in the developers’ box but when I integrate into the pipeline of the Gitlab it just hangs. To be precise, it executes almost all tests but there’s one that it does not execute and then the job times out!
Any idea?!
Katalon 6.1.5