Parse iOS Swift SDK HTTP Requests stopped working spontaneously

Without changing anything, simply opening my Xcode workspace and ruing it on my iPhone 6, all coections to Parse seems to hang and end with an Error 3840. Same issue on simulator.

Error: Error Domain=NSCocoaErrorDomain Code=3840 "No value." UserInfo={NSDebugDescription=No value.} [NSDebugDescription: No value.]

Any Parse queries fails. And this Facebook request retus an error as mentioned below:

PFFacebookUtils.logInInBackgroundWithReadPermissions(["public_profile", "email"], block: { (user:PFUser?, error:NSError?) -> Void in
    print(error?.localizedDescription) // => The data couldn't be read because it isn't in the correct format.
    print(error) / => Error Domain=NSCocoaErrorDomain Code=3840 "No value." UserInfo={NSDebugDescription=No value.}
}

The data couldn't be read because it isn't in the correct format.

Parse Version: 1.13.0

Any ideas on how to test/debug/fix this issue?

I've rolled back git to a version that I knew worked for a fact. Same issue persisted.

Everything I could find on this error 3840 is apparently "resolved" in Parse version 1.9.1