2025-10-07: 500 Error when attempting to create new project: https://gitlab.com/projects/new

500 Error when attempting to create new project: https://gitlab.com/projects/new (Severity 3 (Medium))

Problem: A 500 error occurred when attempting to create a new project at https://gitlab.com/projects/new using the new UI.

Impact: GitLab team members were unable to create new projects using the new UI. This blocked project creation and impacted internal workflows, including deployments and feature flag usage.

Causes: A recently enabled 'panel view' feature flag for the new UI, rolled out to GitLab team members, caused a 500 error when creating a new project.

Response strategy: We disabled the 'panel view' feature flag for GitLab team members, which immediately resolved the error. The feature flag will remain off until a fix is implemented.

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This ticket was created to track INC-4582, by incident.io 🔥