Attempting to build the full UE4 solution for the Test configuration fails in 4.21. Most projects will build successfully, but a few will fail with various errors. Most of the errors appear to be related to stats and logs.
Yes. Building the UE4 solution for the Test configuration completed successfully in 4.20
Most of the solution will build successfully, but a few projects such as UnrealHeaderTool and ProfilerClient will fail with various error messages.
The build completes successfully for the solution.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-66588 in the post.