Hi, I keep getting this error `Could not get unknown property 'kotlin_serialization' for object of t...

# ktor

[Cheenu Soni]

Hi, I keep getting this error Could not get unknown property 'kotlin_serialization' for object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.
while importing this dependency

implementation "org.jetbrains.kotlinx:kotlinx-serialization-core:$kotlin_serialization"

[turansky]

It must be declared in gradle.properties , like here.

[Cheenu Soni]

Ok done. How do I sync Gradle files again? there is no option popping up.

[Cheenu Soni]

I have rebuild the project for now.

[turansky]

Refresh button - first

[Cheenu Soni]

Alright, thanks!