Getting the io.ktor.features.UnsupportedMediaTypeE...

# ktor

[andev]

Getting the
io.ktor.features.UnsupportedMediaTypeException: Content type / is not supported.

And if I add the
addHeader("Content-Type", "application/json")
i get the
io.ktor.gson.UnsupportedNullValuesException: Receiving null values is not supported.
Still not working, even though I think the Content-Type is not necessary because I'm making GET request.

Can_t_make_this_test_work.kt