Overview

Occasionally, you may remove a project trigger for a specific use case but remove the wrong one erroneously. This can cause your project integration to fail and you will be unable to trigger builds as expected.

How Do I Add a New Trigger?

 While there is no way to add the trigger back through the UI, you can try and navigate directly to 

https://app.circleci.com/settings/project/circleci/<org_ID>/<projectID>/triggers/add 

Replace:

•  <orgID> with the organization ID from your Organization Settings  
• <projectID> with the project ID from your Project Settings. 

At that point, you will be able to re-install the CircleCI GitHub App and create a new trigger.
 
For more information, you can refer to the GitHub App integration page.

Additional Resources:

• Is my project setup using GitHub OAuth or GitHub Apps?
• Getting Started with GitHub SSO