FIDO Confirmation Testing Attestation Trust issue

[Abhijai K P]

Hi,

I have implemented an mds3 FIDO server using Yubico webauthn library for passkey web authentication in my project.

After implementation, I've started testing the server with the FIDO conformance tool.
But for  MakeCredential Response server test, Some tests are failing.

It throws an error : Registration verification failed: java.lang.IllegalArgumentException: Failed to derive trust for attestation key.

I've downloaded, extracted, and put into the folder example/fido-conformance-mds by clicking the button "Download Test Metadata" in the tool. 
I have imported all the metadata files to the server (com.yubico.fido.metadata.MetadataBLOBPayload) 
Created trustsource from (com.yubico.fido.metadata.FidoMetadataService)

Test :  P-5 Send a valid ServerAuthenticatorAttestationResponse with SELF "packed" attestation, for "ALG_SIGN_RSASSA_PKCSV15_SHA256_RAW" aka "RS256" algorithm, and check that server succeeds

What is the issue here? am I missing something?

Need the solution ASAP.