Facebook iOS SDK errors – Posting Open Graph Actions - ios

Question

I'm attempting to post an open graph object with an action (using stories) to Facebook, but I always receive an error that doesn't give me any details. I summed up all the code I'm using into a single method for you guys:
- (void)publishToGraph {
NSMutableDictionary<FBOpenGraphObject> *object = [FBGraphObject openGraphObjectForPost];
object.provisionedForPost = YES;
object[#"title"] = #"Example title";
object[#"type"] = #"rs-coupcash";
object[#"description"] = #"Example description";
object[#"url"] = #"http://exampleurl.com/idk";
object[#"image"] = #[#{#"url": #"http://exampleurl.com/example_url.png", #"user_generated" : #"true" }];
[FBSession openActiveSessionWithPublishPermissions:#[#"email", #"public_profile", #"publish_actions"] defaultAudience:FBSessionDefaultAudienceFriends allowLoginUI:YES completionHandler:^(FBSession *session, FBSessionState state, NSError *error) {
if (!error && state == FBSessionStateOpen) {
[FBRequestConnection startForPostOpenGraphObject:object completionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
if(!error) {
NSString *objectId = [result objectForKey:#"id"];
NSLog(#"Object ID: %#", objectId);
id<FBOpenGraphAction> actionObject = (id<FBOpenGraphAction>)[FBGraphObject graphObject];
[actionObject setObject:objectId forKey:#"coupon"];
[FBRequestConnection startForPostWithGraphPath:#"/me/rs-coupcash:favorite" graphObject:actionObject completionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
[[FBSession activeSession] close];
if(!error) {
NSLog(#"OG story posted, story ID: %#", [result objectForKey:#"id"]);
} else {
NSLog(#"Error: %#", error);
}
}];
} else {
NSLog(#"Error: %#", error);
}
}];
} else {
NSLog(#"Error: %#", error);
}
}];
}
The error I get:
Error Domain=com.facebook.sdk Code=5 "The operation couldn’t be completed. (com.facebook.sdk error 5.)" UserInfo=0x114544670 {com.facebook.sdk:HTTPStatusCode=500, com.facebook.sdk:ErrorSessionKey=, expirationDate: 2014-08-26 05:18:45 +0000, refreshDate: 2014-06-27 16:56:32 +0000, attemptedRefreshDate: 0001-12-30 00:00:00 +0000, **permissions**:(
installed,
"public_profile",
email,
"publish_actions"
)>, com.facebook.sdk:ParsedJSONResponseKey={
body = {
error = {
code = 1;
message = "An unknown error has occurred.";
type = OAuthException;
};
};
code = 500;
}}

Answer 1

I was using the wrong type for the open graph object; I was using just the namespace for the "type" value, it should be "rs-coupcash:coupon" in this case.