Using Json payload with no schema gives the following exception:

JsonConverter with schemas.enable requires "schema" and "payload" fields and may not contain additional fields. If you are trying to deserialize plain JSON data, set schemas.enable=false in your converter configuration

There is no environment variable named KEY_CONVERTER_SCHEMAS_ENABLE or VALUE_CONVERTER_SCHEMAS_ENABLE.

Trying to set them using CONNECT_KEY_CONVERTER_SCHEMAS_ENABLE=false }}and {{CONNECT_VALUE_CONVERTER_SCHEMAS_ENABLE=false gives following error:

docker: invalid reference format