Before you use this extension, ensure that Raycast has Accessibility permissions. You can check this in System Preferences > Security & Privacy > Privacy > Accessibility.
This extension is not an official Warp extension as they don't have deep integration with Raycast. When you select a launch configuration, it runs a script command (JXA) that opens Warp and opens your launch configuration. This script command needs Accessibility permissions to open Warp and type the proper command.