I am getting the error:
\"A long-running Parse operation is being executed on the main thread. Break on warnParseOperationOnMainThread() to debug.\">
This is a gentle warning to the developers when they make the Parse calls that would block the main thread.
This is where you can see it all happen,, add a symbolic breakpoint on warnBlockingOperationOnMainThread only if you use a Parse API released from 2015+. Otherwise, put it on the warnParseOperationOnMainThread.
It'll break on that function while you are running your code, and will show you a stack trace which should help you to find the blocking function.
See the images below to have a better understanding.

