Try Block throwing an error

Question

I am getting the following error message:

Errors thrown from here are not handled because the enclosing catch is not exhaustive

At the try statement below:

    if WCSession.isSupported() {
    let session = WCSession.defaultSession()
    if session.watchAppInstalled {
        let UserInfo = ["waste":floatWastedAmount]
        session.transferUserInfo(UserInfo)
        do {
            try session.updateApplicationContext(UserInfo)
        } catch let error as NSError {
            NSLog("Updating the context failed: " + error.localizedDescription)
        }
    }
}

I am not sure why it says non-exhaustive as any error should execute the NSLog statement. Any pointers would help

Answer 1

Change to the following.. for general catch of all errors:

 if WCSession.isSupported() {
        if session.watchAppInstalled {
            let UserInfo = ["waste":floatWastedAmount]
            do {
                try session.updateApplicationContext(UserInfo)
            } catch {
                print("Updating the context failed")
            }
        }
    }