Xcode 9: Could not attach to pid

Question

I\'ve been facing an issue (frequently) with the recent major release of the iOS application development tool - Xcode 9-beta.

It\'s showing me the following error fr

Answer 1

I had same issue. Check screenshot.

Below are few solutions that should work:

1. Rerun project
2. Clean (Shortcut: cmd + shift + K) and Rerun project
3. Quit Xcode and Simulator. Open project and run again
4. Reset content of Simulator (Select Simulator -> Goto Hardware tab -> Erase All Content and Settings…) and rerun project.

Solution 4 worked for me.