R4 APIs (Millennium)

Workflow or API calls:

I am following this documentation to get Binary data, however when I use GET request for this URL

https://fhir-ehr.cerner.com/r4/ec2458f2-1e24-41c8-b71b-0e701af7583d/Binary/XR-197198634

I am getting the following response:

{
	"resourceType":"OperationOutcome",
	"issue":[
		{
			"severity":"fatal",
			"code":"exception",
			"details":{
				"text":"Internal service error from resource store"
			}
		}]
}

Here is the header I am passing through:

{
	'Authorization': "Bearer " + access_token,
	'Accept': "application/pdf"
}

I have passed the following scopes as well when generating my access token:

system/Observation.read system/Patient.read system/Binary.read system/DocumentReference.read system/DiagnosticReport.read system/Communication.read

X-Request-Id = 410e0670-8212-428c-bce8-f55c5f980088+TodH_5Z9N

Could you please look into the issue, and also I wanted to know if are there more API from which I can get PDF documents?