CoreAnimation Error

[Martifan 5]

Hello, I have a problem like this:

after switching from background to foreground, the application freezes for 8-10 seconds, and then continues to work and gives an error in the logs:

CoreAnimation: warning, deleted thread with uncommitted CATransaction; set CA_DEBUG_TRANSACTIONS=1 in environment to log backtraces, or set CA_ASSERT_MAIN_THREAD_TRANSACTIONS=1 to abort when an implicit transaction isn't created on a main thread.

what is the problem and how to solve it?

thanks in advance