pact-jvm-server cannot create v4 Pact

[dennisheinlein]

When i try to POST a v4Pact to the /create endpoint, i get the following error in the log of the pact-jvm-server:

java.lang.ClassCastException: class au.com.dius.pact.core.model.V4Pact cannot be cast to class au.com.dius.pact.core.model.RequestResponsePact (au.com.dius.pact.core.model.V4Pact and au.com.dius.pact.core.model.RequestResponsePact are in unnamed module of loader 'app')

I tried with different Versions of the pact-jvm-server, the error appears in all versions, including 4.6.14.

The error can be reproduced with this pact:
{ "consumer": { "name": "consumer" }, "provider": { "name": "provider" }, "metadata": { "pactSpecification": { "version": "4.0.0" } }, "interactions": [ { "type": "Synchronous/HTTP", "description": "Test", "providerStates": [ { "name": "State" } ], "request": { "method": "GET", "path": "/endpoint" }, "response": { "body": { "content": { "key": "value" } }, "headers": { "Content-Type": "application/json" }, "status": 200 } } ] }