I try to use ktor-client + gson in MP project. In build.gradle.kts I’ve wrote:

common:
                implementation("io.ktor:ktor-client-core:$ktorVersion")
                implementation("io.ktor:ktor-client-json:$ktorVersion")
                implementation("io.ktor:ktor-client-gson:$ktorVersion")
macOS:
                implementation("io.ktor:ktor-client-curl:$ktorVersion")
                implementation("io.ktor:ktor-client-core-native:$ktorVersion")
                implementation("io.ktor:ktor-client-json-native:$ktorVersion")

But when I write

import io.ktor.client.features.json.GsonSerializer

I have got the error

Unresolved reference: GsonSerializer

What I’ve done wrong?

Gson only exists on JVM, so you can't use it from common. For common serialization use kotlinx-serialization via

ktor-client-serialization