Trying haven relays blossom server.

Returns this error:

"Instantiation of [simple type, class com.vitorpamplona.amethyst.service.Nip96Retriever$ServerInfo] value failed for JSON property api_url due to missing (therefore NULL) value for creator parameter apiUrl which is a non-nullable type

at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1, column: 376] (through reference chain: com.vitorpamplona.amethyst.service.Nip96Retriever$ServerInfo["api_url"])"

Anything I can change? I use the outbox URL for this. Is it correct?