Xcode 9 - Could not attach to pid for Frameworks unit tests

Question

I am getting the following error after migrating from one mac to another using time machine.

Could not attach to pid

Ensure "project title"

Answer 1

You can do this following steps -

1. Kill your simulator and then run it again from Xcode.

2. If you are trying to build too fast after a build has started. Try stopping and running the project again.

3. This can be a issue with the untrusted certificates in key-chain access, please remove such a type of certificates and re-build again.

Finally, you can do is recheck the Keychain certificates. Delete the exiting ones by right clicking (they'd passed expiration) and unchecked "automatically manage signing" in Targets->General

Hope above steps will solve your problem.