Unable run CI/CD pipeline - erro in API Graphql

We are encountering an issue where CI/CD pipelines cannot be executed due to an error returned from the GraphQL API. When attempting to trigger a pipeline through the API or UI workflows that rely on GraphQL endpoints, the request fails with a GraphQL-related error (e.g., invalid response, missing field, or execution failure).

This behavior prevents pipelines from starting properly, blocking workflows that depend on automated CI runs. The root cause seems related to a GraphQL API regression or misconfiguration, which may affect pipeline triggering or job creation under certain conditions.

Steps to reproduce:

Attempt to trigger a pipeline via the GitLab UI or API.

Observe the request being sent that involves GitLab’s GraphQL endpoint.

The API returns an error that prevents the pipeline from running.

Expected behavior: CI/CD pipelines should start successfully when requested through supported interfaces, and the GraphQL API should return a valid response that allows pipeline creation/execution.

Actual behavior: The pipeline fails to start, and an error is returned from the GraphQL API.