My app is working fine at all, but recently an user told me his app is closing after its launch. He was very nice and accepted to join my external testers on TestFlight so I can get his error. Well that's my problem. He installed TestFlight, got the same error, but I still get no log errors, even on TestFlight mode. I installed also Fabric - CrashLytics, but it does not show any errors on log also. Someone has an idea of what else can I do?
EDIT: I logged in with his credentials on my iPhone/Simulator and works well. It's something with his device probably.
EDIT2: I got the error message from user's device:
Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000001, 0x0000000100054ee0 Termination Signal: Trace/BPT trap: 5 Termination Reason: Namespace SIGNAL, Code 0x5 Terminating Process: exc handler [0] Triggered by Thread: 0
Filtered syslog: None found
Thread 0 name: Dispatch queue: com.apple.main-thread