For EE , you don't need original at all , in fact you don't need to upload the ECA report into your eAPR, as clearly stated on IRCC website. People here grow a habit of providing extra documentations just to be safe.
What you MUST provide is a correct ECA report number in your eAPR , that is the only way IRCC verify your ECA and no through the original or website copy of the report.
Regards,,,