All of a sudden my project fails to build in Xcode. If I look at the log I see all the needed dependencies being built, and then I get a strange error:
Verify fi
I know this is super late to answer but I'm answering since none of the above solutions worked. For me restarting, clean building, deleting derived data nothing worked. Because the issue was not due to any zombie objects or something like that. I'm using Xcode 11. I think it's an Xcode bug that sometimes errors are not shown in the issue navigator. But don't worry check the build report in Report navigator(The last tab in project navigator: the one that looks like a comment box with lines in it. or simply cmd + 9).
Click the relevant build and resolve the issue, mine was missing file in pods directory.