For a project that uses CocoaPods without checking the Pods directory into source control the Build stage will fail with a Build Failed error.
Click in the toolbar to open the Error Summaries window.
You should see an error as reported by CocoaPods. Use the menu bar, select Navigate, then Show Checkout Folder In Terminal to open a terminal in the location of the project folder.
Run `$ pod install` in the project directory.
Wait for the installation to complete. Click in the toolbar to start Windmill.