I ran into this issue a while ago: I install my app in my iPhone both in debug and release and it works well. However after some time (days, weeks) it starts crashing for no apparent reason on start, right after the splash screen shows up. I suspect this happens after every iOS update.
At first I thought this had something to do with the metro bundler not running but the app crashes both in debug and release.
I'm really just everything as described in the docs. The main problem here is a can't reproduce this error (or at least I don't know how) since it depends on an iOS update so I can't do it on the simulator, only in a real device.
EDIT: I got some logs from the crash, thanks to this buddybuild guide.
The logs for Release:
error 09:30:50.134080 +0200 assertiond Unable to obtain a task name port right for pid 19786: (os/kern) failure (0x5)
error 09:30:50.134299 +0200 assertiond Failed to start job with error { description = "Unable to get valid task name port right for pid 19786"; failureReason = "The process failed to exec"; recoverySuggestion = "Consult /var/log/com.apple.xpc.launchd/launchd.log for more information"; }
error 09:30:50.137082 +0200 SpringBoard [org.josemigallas.RealmsCounter] Bootstrap failed with error:
error 09:30:50.137354 +0200 SpringBoard Bootstrapping failed for with error: Error Domain=BKSProcessErrorDomain Code=1 "Unable to bootstrap process with bundleID org.josemigallas.RealmsCounter" UserInfo {NSLocalizedDescription=Unable to bootstrap process with bundleID org.josemigallas.RealmsCounter, BKSProcessExitReason=0, NSLocalizedFailureReason=Failed to start job, NSUnderlyingError=0x282693900 {Error Domain=NSPOSIXErrorDomain Code=3 "No such process" UserInfo={NSLocalizedFailureReason=The process failed to exec, NSLocalizedRecoverySuggestion=Consult /var/log/com.apple.xpc.launch /launchd.log for more information, NSLocalizedDescription=Unable to get valid task name port right for pid 19786}}, BSErrorCodeDescription=bootstrap-failed}
EDIT2: I found out it's happening in debug as well.. so updating the text a bit.
Thanks in advance.