com.facebook.sdk.core error 8

Question

This is more informative than anything. I couldn't for the life of me find anything on error code 8 when trying to access the login prompt (aka safari) when debugging my ios app. After I hit the log into facebook button in my app it would attempt to open safari then dump me back to the login page to my app. The error was being caused by the permissions array. I had the the permission "public_profile" spelled "public profile" which was throwing an error obviously. So make sure your permission are type corrected if you get the com.facebook.sdk.core error 8.

Hope that helps someone.

score 9 · Accepted Answer · answered Jul 28 '15 at 18:43

Make sure your permissions are typed correctly

   func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result: FBSDKLoginManagerLoginResult!, error: NSError!) {

            if error == nil {
                println("login complete")
                self.performSegueWithIdentifier("showLogin", sender: self)

            }else{

                println(error.localizedDescription)
    //com.facebook.sdk.core error 8.
            }
        }

score 4 · Answer 2 · answered Sep 17 '15 at 17:21

4

In my case this error was caused by improper bundle id set in facebook settings of the app itself. Facebook "bundle id" is case sensitive, in my Info.plist I had uppercase product name, but in fb settings - lowercase.

answered Sep 17 '15 at 17:21

Wladek Surala

2,590
1
26
31

For me, it turned out our bundle id in production version was different and wasn't in the facebook app settings for ios. – peterept Nov 23 '15 at 01:57
It solved my error thank you so much for contributing. @GameCon – Arpit B Parekh Jan 28 '17 at 12:35

score 4 · Answer 3 · answered Sep 17 '15 at 20:34

4

In my case, I was using a Facebook account that hadn't yet been added to any of the Facebook app's admins/developers/testers roles.

answered Sep 17 '15 at 20:34

michael

41
2

Facebook itself will display an error message when you log in, to the effect that you aren't a tester for this test app. – SafeFastExpressive Sep 21 '15 at 17:09
THANK YOU! This saved my life. – Tamás Sengel Apr 14 '17 at 20:53

score 3 · Answer 4 · answered Jul 27 '16 at 07:20

In my case, after spending several hours of debugging I found that I was using the API,

func application(application: UIApplication,
                 openURL url: NSURL, options: [String: AnyObject]) -> Bool {
    if #available(iOS 9.0, *) {
        FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: options)
    } else {
        // Fallback on earlier versions
    }
    return true
}

which is deprecated for iOS 9.So, I used:

func application(application: UIApplication,
                 openURL url: NSURL, sourceApplication: String?, annotation: AnyObject) -> Bool {
    FBSDKApplicationDelegate.sharedInstance().application(application, openURL: url, sourceApplication: sourceApplication, annotation: annotation)
    return true
}

Which worked for me. Hope this saves time of someone.

score 3 · Answer 5 · answered Oct 27 '16 at 11:45

3

MAN!!! In my case it was the "bio" in the parameter that was causing this error. Facebook has changed the "bio" key to "about". So anyone using "bio" in parameters should change it to "about"

Pheww!!!

answered Oct 27 '16 at 11:45

Hyder

1,163
2
13
37

Bio was deprecated in version 2.8 and above I believe. I had this issue. Thanks for posting this. – Unome Nov 08 '16 at 04:14
glad I could help! Good luck! – Hyder May 04 '17 at 14:15

score 2 · Answer 6 · answered Sep 30 '16 at 12:08

2

In my case It was wrong version. Instead of version: "v2.7", I used version: "2.7"

answered Sep 30 '16 at 12:08

Naveen Ramanathan

2,166
1
19
21

score 1 · Answer 7 · answered Apr 14 '17 at 09:40

1

In my case it was because I listed name twice in the fields array. Assume that would apply to any field requested twice.

answered Apr 14 '17 at 09:40

Damien

1,647
2
16
17

score 0 · Answer 8 · answered Aug 03 '16 at 06:49

0

I had the same problem. It was because I didn't implement facebook login feature. After adding that, I logged in and my problem got solved.

answered Aug 03 '16 at 06:49

Suhaib

2,031
3
24
36

score 0 · Answer 9 · answered Apr 04 '17 at 08:37

0

In my case, I was playing with the Facebook Ads API and I tried to get a field but the name was wrong.

I had insights{date_start,date_end}, instead of insights{date_start, date_stop}.

More info here.

Hope it helps anyone.

answered Apr 04 '17 at 08:37

Paul Razvan Berg

16,949
9
76
114

score 0 · Answer 10 · answered Aug 01 '17 at 13:05

In my case, I tried to get Facebook Id without logging into Facebook. Make sure you're logged into Facebook.

let accessToken = FBSDKAccessToken.current()
    if accessToken != nil {

        self.getCurrentUserFbId()
        print("LoggedIn")

    } else {

        print("Not loggedIn")
        self.loginIntoFacebook()
    }

Hope this will helpful for anyone.

score 0 · Answer 11 · answered Jul 26 '18 at 19:23

0

When it happened to me, I found that Facebook's access token was expired. Someone decided to store access token in UserDefaults and reuse it later. Of course all tokens more than ~2 months old were expired.

answered Jul 26 '18 at 19:23

Vitalii

4,267
1
40
45

score 0 · Answer 12 · answered Dec 26 '18 at 14:09

In my case it was because of GraphRequest.

The error response is

"com.facebook.sdk:FBSDKErrorDeveloperMessageKey" = "Syntax error \"Expected end of string instead of \"%\".\" at character 5: email%2Cname%2Cgender%2Cpicture"; "com.facebook.sdk:FBSDKGraphRequestErrorCategoryKey" = 0; "com.facebook.sdk:FBSDKGraphRequestErrorGraphErrorCode" = 2500; "com.facebook.sdk:FBSDKGraphRequestErrorHTTPStatusCodeKey" = 400; "com.facebook.sdk:FBSDKGraphRequestErrorParsedJSONResponseKey" = { body = { error = { code = 2500; "fbtrace_id" = AFEUYbcYP39; message = "Syntax error \"Expected end of string instead of \"%\".\" at character 5: email%2Cname%2Cgender%2Cpicture"; type = OAuthException; }; }; code = 400; };

The issue about that is https://github.com/facebook/facebook-swift-sdk/issues/309

score 0 · Answer 13 · answered Jul 19 '19 at 08:48

0

In my case was because of birthday,friendlists . removing them started to work.

answered Jul 19 '19 at 08:48

LittleBoat

341
3
4

score 0 · Answer 14 · answered Aug 30 '20 at 08:31

0

For me just had to go facebook developer under platform and activate deep linking

answered Aug 30 '20 at 08:31

Omair

7
5

score -1 · Answer 15 · answered Nov 23 '21 at 09:00

In our case we were seeing this issue while trying to log in with some test account (but not all). We were not following Facebook's recommended practice:

Before you test each use case below, make sure you remove your app from your test user's Facebook account using app settings.

After we did it for the failing test accounts, we were able to log in.

com.facebook.sdk.core error 8

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