Sync problem

[chalupal]

Hi guys.
I have issue sync problem. Can you help me with this?

this issue is related to [https://github.com/mail-in-a-box/mailinabox/issues/937]

From z-push erro log

18/09/2016 08:59:00 [ 3449] [ERROR] [[email protected]] BackendCardDAV->ChangesSink - Error resyncing vcards: Woops, something's gone wrong! The CardDAV server returned the http status code 504.
18/09/2016 08:59:00 [ 3449] [ERROR] [[email protected]] BackendCardDAV->ChangesSink - Error getting the changes
18/09/2016 09:09:32 [ 3598] [ERROR] [[email protected]] BackendCardDAV->GetMessageList - Error getting the vcards in 'https://127.0.0.1:443/cloud/remote.php/carddav/addressbooks/[email protected]/contacts/': Woops, something's gone wrong! The CardDAV server returned the http status code 504.
18/09/2016 09:09:32 [ 3598] [ERROR] [[email protected]] BackendCardDAV->GetMessageList - Error getting the vcards
18/09/2016 09:20:21 [ 3598] [ERROR] [[email protected]] BackendCardDAV->ChangesSink - Error resyncing vcards: Woops, something's gone wrong! The CardDAV server returned the http status code 504.
18/09/2016 09:20:21 [ 3598] [ERROR] [[email protected]] BackendCardDAV->ChangesSink - Error getting the changes
18/09/2016 09:28:48 [19195] [ERROR] [[email protected]] BackendCardDAV->ChangesSinkInitialize - Error doing the initial sync for 'https://127.0.0.1:443/cloud/remote.php/carddav/addressbooks/[email protected]/contacts/': Woops, something's gone wrong! The CardDAV server returned the http status code 504.
18/09/2016 09:38:49 [ 3242] [ERROR] [[email protected]] BackendCardDAV->ChangesSink - Error resyncing vcards: Woops, something's gone wrong! The CardDAV server returned the http status code 504.
18/09/2016 09:38:49 [ 3242] [ERROR] [[email protected]] BackendCardDAV->ChangesSink - Error getting the changes
18/09/2016 09:38:49 [30174] [ERROR] [[email protected]] BackendCardDAV->ChangesSink - Error resyncing vcards: Woops, something's gone wrong! The CardDAV server returned the http status code 504.
18/09/2016 09:38:49 [30174] [ERROR] [[email protected]] BackendCardDAV->ChangesSink - Error getting the changes
18/09/2016 09:48:49 [  441] [ERROR] [[email protected]] BackendCardDAV->GetMessageList - Error getting the vcards in 'https://127.0.0.1:443/cloud/remote.php/carddav/addressbooks/[email protected]/contacts/': Woops, something's gone wrong! The CardDAV server returned the http status code 504.
18/09/2016 09:48:49 [  441] [ERROR] [[email protected]] BackendCardDAV->GetMessageList - Error getting the vcards
18/09/2016 09:48:50 [ 3442] [ERROR] [[email protected]] BackendCardDAV->GetMessageList - Error getting the vcards in 'https://127.0.0.1:443/cloud/remote.php/carddav/addressbooks/[email protected]/contacts/': Woops, something's gone wrong! The CardDAV server returned the http status code 504.
18/09/2016 09:48:50 [ 3442] [ERROR] [[email protected]] BackendCardDAV->GetMessageList - Error getting the vcards
18/09/2016 10:01:36 [ 3442] [ERROR] [[email protected]] BackendCardDAV->ChangesSink - Error resyncing vcards: Woops, something's gone wrong! The CardDAV server returned the http status code 0.
18/09/2016 10:01:36 [ 3442] [ERROR] [[email protected]] BackendCardDAV->ChangesSink - Error getting the changes
18/09/2016 10:01:36 [ 3598] [ERROR] [[email protected]] BackendCardDAV->Logon(): User '[email protected]' failed to authenticate on 'https://127.0.0.1:443/carddav/addressbooks/[email protected]/': 
18/09/2016 10:01:36 [ 3449] [ERROR] [[email protected]] BackendCardDAV->Logon(): User '[email protected]' failed to authenticate on 'https://127.0.0.1:443/carddav/addressbooks/[email protected]/':