Integration Sharepoint 2013 sp1 to CRM 2016

Hi
When i try to run the below command, InValid JSON primitive error occur.
New-SPTrustedSecurityTokenIssuer –Name "crm" –IsTrustBroker:$false –MetadataEndpoint  "crm2016.contoso.com/.../json"

When I put the metadataEndPoint url in the browser there is 404 error occur, Suppose instead of https(https://crm2016.contoso.com:444/XrmServices/2015/metadataendpoint.svc/json/?orgName=CRM2016) If I put http(http://crm2016.contoso.com/XrmServices/2015/metadataendpoint.svc/json/?orgName=CRM2016) json file gets downloaded