<i have an error while using roomDB in kotlin> im ...

# stackoverflow

[user]

i have an error while using roomDB in kotlin
im learning using room db in kotlin
i have written all codes similar to my learning course step by step except one :
in my ViewModeFactory class , i couldn't put the safe call operator in here , cause an error whould have shown :(in below : safe call operator must be put after ViewModel)
override fun create(modelClass: Class): T {}

when i don't put any safe call operator , the error disappears .
but when i run my app , this error will apear :

error: Type of the parameter must be a class...