codesign failed with a nonzero exit code

Hi,

Currently I am stuck on a frustrating issue with Xcode (10.0).

I have an apple developer account, and it is linked to Xcode. Certificates etc are all downloaded.

When I do a build or run my unit tests, everything goes fine.

But if I then make a change, and run unit tests again, it fails with Command CodeSign failed with a nonzero exit code.

(....app: code object is not signed at all)

I have to do a clean build, then I can run it again. This is a loop.

Build clean -> Run tests -> Make changes -> Build clean -> Run tests -> ...

As you can see this is not very productive.

Couple of things I have tried:

- Remove all certificates from apple

- Remove complete keychain

The above does not seem to work. One thing I notice is that the certificate "Mac developer: FirstName LastName" expires before it is created, even when I delete it.

All help is appreciated.