# When something does not work

Most typical stumbling blocks when getting started can be checked yourself, and if that is not enough, support helps.

> Source: https://www.application-platform.com/en/docs/get-help/

If a remote workspace does not connect, see the workspace [Troubleshooting]({{< relref "workspace-vm-troubleshooting" >}}).

## The pipeline is red

In GitLab under **CI/CD → Pipelines**, open the job marked red; the error message is usually at the end of its log and can often be reproduced locally with `ap run-local`. Fix the cause and push again without changing `.gitlab-ci.yml`; if the log does not help, send the pipeline link to support, and [What are pipelines?]({{< relref "what-are-pipelines" >}}) explains the structure.

## The page is not reachable

Check whether the last pipeline passed, whether a server is assigned to the project, and whether the manual production job was started. If the dev address works but your domain does not, the check mark under **Domains** in the **Status** column is usually missing; then compare the DNS records with those at your domain provider, see [Configure DNS]({{< relref "domain-how-to" >}}).

## The agent reports that you are not signed in

Type `ap login`, check your account with `ap whoami`, and repeat the request. If the MCP server `application-platform` is missing, repeat the installation from [Work with an AI agent]({{< relref "work-with-ai-agents" >}}) and reload the editor; if `ap` is not found, the ap CLI from the [downloads page]({{< relref "/downloads" >}}) is missing.

## The application does not start

If `ap run-local` aborts because a port is in use, stop the old process or Docker container; if a runtime is missing although installed, you are not in the repository folder with the matching `.tool-versions`. `ap doctor` and the **Developer setup** of the setup app show missing tools; further points are in [Open and run your project]({{< relref "open-and-run" >}}).

## Support and feedback

The [support page]({{< relref "/support" >}}), in the platform under **More** → **Help**, offers a form and German and English WhatsApp groups; we usually reply within one business day. State organization, project, what you expected, and what happened instead, ideally with the error message or pipeline link, but without passwords or credentials.

Wishes and notes on unclear passages in the documentation go to the [feedback page]({{< relref "/feedback" >}}).