<Kotlin ArrayAdapter Error: None of the following ...

# stackoverflow

[user]

Kotlin ArrayAdapter Error: None of the following functions can be called with the arguments supplied
I am new to Kotlin for Android development. While following along a tutorial project, I needed to use ArrayAdapter with a custom class. Building the project failed with error.

The MainActivity.kt class throwing the error:

class MainActivity : AppCompatActivity() {

override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
setSupportActionBar(toolbar)
}

val dm = DataManager()
val adapterCourses =...