error: (415) Unsupported Media Type.

[marcelmorren]

Hi getting the following error all the time, any sugestion

Invoke-RestMethod : The remote server returned an error: (415) Unsupported Media Type. At C:................................\manageRefresh.ps1:78 char:1

• Invoke-RestMethod -Uri $uri -Headers $authHeader -Method POST -Verbos ...

• 
  + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebException
  + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand