Script error

[Tbird1979]

Hello, i'm getting this error when i run the script...

Invoke-WebRequest : {"error":"invalid_client"} At C:\Scripts\NinjaTicketing.ps1:243 char:15

• ... $Result = Invoke-WebRequest -uri "https://$($Script:Instance)/ws/oa ...

• 
  + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebException
  + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand
  ConvertFrom-Json : Cannot bind argument to parameter 'InputObject' because it is null.
  At C:\Scripts\NinjaTicketing.ps1:246 char:56

• ... uthorization' = "Bearer $(($Result.content | ConvertFrom-Json).access ...

• 
  + CategoryInfo          : InvalidData: (:) [ConvertFrom-Json], ParameterBindingValidationException
  + FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Microsoft.PowerShell.Commands.ConvertFromJsonCommand

[Tbird1979]

Here is a screenshot of the report generator screen, i'm not seeing any of the mapping options. Id this the screen i should get?