Error at launch app

When I launch app sometimes I get this error and sometimes no:

2017-11-10 14:00:37.119701+0000 XXX[768:176399] [DYGLInitPlatform] connection to host has failed: Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory" 2017-11-10 14:00:37.123363+0000 XXX[768:176399] aborting: platform initialization failed (lldb)

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What can cause this problem ?

How do I enable developer apps on iPhone?

Tap Settings > General > Profiles or Profiles & Device Management. Under the "Enterprise App" heading, you see a profile for the developer. Tap the name of the developer profile under the Enterprise App heading to establish trust for this developer. Then you see a prompt to confirm your choice.

There could be some corrupt files in your build folder.

Try running Clean (⌘+⇧+K) and Clean build folder... ( ⌘+⇧+⌥+K ) and rebuild your application.