Workflow Manager Sorunu

Merhaba Workflow manager ile ilgili aşağıdaki uyarıyı alıyorum  yardımcı olabilirmisiniz.

Teşekkürler

PS C:\Users\sp_farm> Register-SPWorkflowService -SPSite " http://tr-portal " -Work
flowHostUri " http://tr-portal:12291 " -AllowOAuthHttp

Register-SPWorkflowService : Unable to properly communicate with the workflow
endpoint.
At line:1 char:1
+ Register-SPWorkflowService -SPSite " http://tr-portal " -WorkflowHostUri
" http://t ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~
    + CategoryInfo          : InvalidData: (Microsoft.Share...WorkflowService:
   RegisterSPWorkflowService) [Register-SPWorkflowService], ConfigurationExce
  ption
    + FullyQualifiedErrorId : Microsoft.SharePoint.WorkflowServices.PowerShell
   .RegisterSPWorkflowService