Hi I am trying to develop Apple MDM solution as a vendor. I got the Vendor certificate from apple developer portal. When I was trying to generate the csr and upload to Portal (https://identity.apple.com/pushcert/) It says Invalid Certificate Signing Request. I had also tried to follow documentation (https://developer.apple.com/documentation/devicemanagement/setting-up-push-notifications-for-your-mdm-customers) but still the same error. Can anyone please guide how to generate the csr.