facebook login issue - canOpenURL: failed for URL: “fbauth2:///” - error: “(null)”

Question

When I click on login with Facebook button, it is opening safari browser and getting closed immediately. Noticed error on the console.

App delegate method:

Answer 1

I figured out my issue. It was just the syntax in loginButtonClicked function. The error message was leading me down the wrong path. Here is the working code.

@objc func loginButtonClicked() {
    self.login = FBSDKLoginManager()

    self.login.logIn(withReadPermissions: ["public_profile"], from: self, handler: {(result, error) -> Void in
        if error != nil {
            print("Process error")
        }
        else if (result?.isCancelled)! {
            print("Cancelled")
        }
        else {
            print("Logged in")
            DispatchQueue.main.async(execute: {
                let viewController:UIViewController = self.storyboard?.instantiateViewController(withIdentifier: "UITabBarController") as! UITabBarController
                self.present(viewController, animated: true, completion: nil)
            })
        }

        })
}