libMobileGestalt MobileGestaltSupport.m:153 MobileGestalt.c:550 Xcode Console

Question

I am getting Following messages on Xcode Console View

• libMobileGestalt MobileGestaltSupport.m:153: pid 231 (myproject) does not have sandbox access for frZQ

Answer 1

Update #1:

Additionally, I found that the same message appeared in later builds but crashes were associated with invalid Outlets in my storyboard that needed to be renamed or unlinked from the storyboard/controller: Terminating app due to uncaught exception 'NSUnknownKeyException',...

Original Response

In my case, I started seeing this issue after adding Firebase pods into my application. After some debugging with a fresh stub, I fixed my issue by adding the custom Google-Sign-In URL Scheme to my projects URL Types at the bottom of the info pane.

As noted in the instructions:

1. From your GoogleService-Info.plist, copy the value from the REVERSED_CLIENT_ID key
2. Click on your blue project file
3. Go to the Info Section on the Project Pane
4. At the bottom of the pane, Add a new URL Type and paste the copied text into the URL Schemes field

(Source, Google Instructions)