Error `Element class kotlinx.serialization.json.JsonObject is not a JsonPrimitive`

[aridder]

Im trying to use the web-wallet to receive a credential im issuing in another server using waltid ssi-kit. Im getting this error:

happening on line SSIKit2WalletService.kt:447

credentialResponse: CredentialResponse(format=ldp_vc, credential={"credentialSubject":{"size":"Large","id":"did:key:z6MkmVY1aRT29HH7khh3YXoqQhfeyrtFefi8n1WCSbxbFfCz"},"credentialBranding":{"watermarkImageUrl":"https://example.edu/img/watermark.png","backgroundColor":"#7661e0"},"description":"bevis for spist kake","validFrom":"2024-01-17T16:41:52Z","type":["VerifiableCredential","KakeCredential"],"title":"Kakebevis","@context":["https://www.w3.org/2018/credentials/v1","https://mattr.global/contexts/vc-extensions/v2","https://schema.org"],"issuer":{"name":"Team Kanakas","id":"did:key:z6MkjnAh1nWKSo7nxAtUuzYZwtLaWY5oqn1iS7XGx7266HWk","logoUrl":""},"credentialStatus":{"statusPurpose":"revocation","statusListIndex":"37","id":"http://localhost/status/revocation#37","statusListCredential":"http://localhost/status/revocation","type":"StatusList2021Entry"},"issuanceDate":"2024-01-17T16:41:52Z","name":"Kakebevis","id":"urn:uuid:bf90acc3-65f0-4eb5-a71f-02ee6d92f6c5","proof":{"created":"2024-01-17T16:41:52Z","jws":"eyJiNjQiOmZhbHNlLCJjcml0IjpbImI2NCJdLCJhbGciOiJFZERTQSJ9..ZGjtgaxHAmodfuT0wJtua_NMYyVOB0nXA5oOPB4c1NoHgsXPxJjGSkHxL6lTDIMZkyo-phf6ZBzv2G4YVhQjCw","proofPurpose":"assertionMethod","type":"Ed25519Signature2018","verificationMethod":"did:key:z6MkjnAh1nWKSo7nxAtUuzYZwtLaWY5oqn1iS7XGx7266HWk#z6MkjnAh1nWKSo7nxAtUuzYZwtLaWY5oqn1iS7XGx7266HWk"},"issued":"2024-01-17T16:41:52Z","expirationDate":"2024-02-16T16:41:51Z"}, acceptanceToken=null, cNonce=null, cNonceExpiresIn=null, error=null, errorDescription=null, errorUri=null, customParameters={c_nounce_expires_in=86400, c_nounce="fGFF7UkhLa"})

wallet-backend-1     | // parse and verify credential(s)
wallet-backend-1     | java.lang.IllegalArgumentException: Element class kotlinx.serialization.json.JsonObject is not a JsonPrimitive
wallet-backend-1     |  at kotlinx.serialization.json.JsonElementKt.error(JsonElement.kt:326)
wallet-backend-1     |  at kotlinx.serialization.json.JsonElementKt.getJsonPrimitive(JsonElement.kt:229)
wallet-backend-1     |  at id.walt.webwallet.service.SSIKit2WalletService.useOfferRequest(SSIKit2WalletService.kt:447)

[github-actions[bot]]

This issue has been marked as stale.

[waltkb]

@severinstampler Linked data proof instead of JWT signature?

[severinstampler]

yes indeed, the wallet service (and issuer service) doesn't currently support the ldp_vc credential format. The ssikit issuer used to support it. The wallet service assumes the credential to be a string value (jwt), whereas in case of ldp_vc the credential is a json object.

[github-actions[bot]]

This issue has been marked as stale.