SD Verification doesn't work

• go to https://fc-server.gxfs.dev/verification
• choose SD file to verify from project: /fc-service/fc-service-core/src/test/resources/VerificationService/syntax/legalPerson1.jsonld
• press Verify button

current output is: Error : {"code":"verification_error","message":"Semantic Errors: VerifiablePresentation must contain 'verifiableCredential' property"}, but the same SD validates properly in the VerificationServiceImplTest.validSyntax_ValidPerson() test (turn off VerifySignature flag)