Login to Twitter sometimes fails - ios

Question

I use the simple code for login to Twitter
[[Twitter sharedInstance] logInWithCompletion:^(TWTRSession *session, NSError *error) {
if (session != nil) {
NSLog(#"successful %#",session);
} else {
NSLog(#"error: %#", error);
}
}];
and sometimes I get the error:
2016-08-04 15:39:14.472 MyProject[11143:132894] [TwitterKit] did
encounter error with message "Error attempting to obtain temporary
auth token.": Error Domain=NSURLErrorDomain Code=-1004 "Could not
connect to the server." UserInfo={NSUnderlyingError=0x7fe043a49830
{Error Domain=kCFErrorDomainCFNetwork Code=-1004 "(null)"
UserInfo={_kCFStreamErrorCodeKey=61, _kCFStreamErrorDomainKey=1}},
NSErrorFailingURLStringKey=https://api.twitter.com/oauth/request_token,
NSErrorFailingURLKey=https://api.twitter.com/oauth/request_token,
_kCFStreamErrorDomainKey=1, _kCFStreamErrorCodeKey=61, NSLocalizedDescription=Could not connect to the server.} 2016-08-04
15:39:14.473 EarCrush[11143:132894] [TwitterKit] did encounter error
with message "Unable to authenticate using the system account.": Error
Domain=NSURLErrorDomain Code=-1004 "Could not connect to the server."
UserInfo={NSUnderlyingError=0x7fe043a49830 {Error
Domain=kCFErrorDomainCFNetwork Code=-1004 "(null)"
UserInfo={_kCFStreamErrorCodeKey=61, _kCFStreamErrorDomainKey=1}},
NSErrorFailingURLStringKey=https://api.twitter.com/oauth/request_token,
NSErrorFailingURLKey=https://api.twitter.com/oauth/request_token,
_kCFStreamErrorDomainKey=1, _kCFStreamErrorCodeKey=61, NSLocalizedDescription=Could not connect to the server.}
2016-08-04 15:39:14.473 MyProject[11143:132894] error: Error
Domain=NSURLErrorDomain Code=-1004 "Could not connect to the server."
UserInfo={NSUnderlyingError=0x7fe043a49830 {Error
Domain=kCFErrorDomainCFNetwork Code=-1004 "(null)"
UserInfo={_kCFStreamErrorCodeKey=61, _kCFStreamErrorDomainKey=1}},
NSErrorFailingURLStringKey=https://api.twitter.com/oauth/request_token,
NSErrorFailingURLKey=https://api.twitter.com/oauth/request_token,
_kCFStreamErrorDomainKey=1, _kCFStreamErrorCodeKey=61, NSLocalizedDescription=Could not connect to the server.}
I mean sometimes because:
2 days ago I can login to Twitter normally
Yesterday I can not login,
This morning I can login but now (afternoon) I can not login even I don't change any code
I have update my Twitter via Fabric to latest version now (2.3) and I'm sure I have internet connection
I know my problem is very strangely but hope someone have a same problem like me can give me some suggestion for fix it

Answer 1

I had problem with login with Twitter and Firebase. This code working for me:
Twitter.sharedInstance().startWithConsumerKey("key", consumerSecret: "secret")
in AppDelegate. Then, when you tap on your custom login button call this:
Twitter.sharedInstance().logInWithCompletion() { session, error in
if let session = session { ... })
If you using Fabric, you don't need to call Fabric.with([Twitter.self]).