Good morning everyone. I can return my user in a mapping like :

val user = userDSL.show(id)
            call.respond(mapOf("user" to user))

but it won’t let me do

call.respond(user)

I get this error:

Type mismatch: inferred type is User? but TypeVariable(T) was expected

why ?

user is nullable, Ktor call.responds require a non null value