In the panel on the left (cmd + 0, to show if it is not visible), select the 6th tab (cmd + 6 to select), which should look like this:

In this area, you should notice that at the bottom is a list of all active threads in your application. One (or maybe more) of them will be opened, showing the stack trace for the stream, for example:

- , . , , ( ). , [AppDelegate applicationDidFinishLaunching:]. , , .
, !