Post body doesn't print

[igloo12]

The post body doesn't print using the example in the README

        Fuel.post("https://httpbin.org/post", listOf("foo" to "foo", "bar" to "bar"))
            .also { println(it.url) }
            .also { println(String(it.body.toByteArray())) }

The url prints but the body doesn't expecting to see foo=foo&bar=bar

using spring boot + kotlin