Class does not exist while trying to work with FHIR Resource Repository (session from GS19)

Session : Working with the FHIR Resource Repository

We tried below steps to create and load sample data from Synthea (FHIR data).

1. Open terminal
2. USER>zn "HSLIB"
3. HSLib> do ##class(HS.HC.Util.Installer.FHIR).Install()
4. Namespace  : FHIRServer
5. Install DSTU2? (Y/N) N
6. Install STU3? (Y/N) Y
7. STU3 CSP app [/csp/healthshare/fhirserver/fhir/stu3]:
8. STU3 CSP Open ID Connect (OAuth 2.0) app [/csp/healthshare/fhirserver/fhir-oidc/stu3]:
9. Install STU3 resource repository? (Y/N) Y
10. Install STU3 PIXm? (Y/N) N
11. Install STU3 PDQm? (Y/N) N
12. Install STU3 MHD? (Y/N) N
13. Continue with Installation? (Y/N) Y
14. HSLIB>zn "FHIRServer"
15. FHIRSERVER>do ##class(HS.HC.Util.FHIR.DataLoad).SubmitResourceFiles("C:/Users/pdabhi/Downloads/fhir_stu3","STU3")
16. FHIRSERVER>do ##class(HS.HC.Util.FHIR.DataLoad).SubmitResourceFiles("C:/Users/pdabhi/Downloads/fhir_stu3","STU3")

DO ##CLASS(HS.HC.Util.FHIR.DataLoad).SubmitResourceFiles("C:/Users/pdabhi/Downlo ads/fhir_stu3","STU3")

^

<CLASS DOES NOT EXIST> *HS.HC.Util.FHIR.DataLoad