lib doesn't compile with com.android.tools.build:gradle:3.4.0

[ilyamuromets]

I use your lib in android app. Before I used classpath "com.android.tools.build:gradle:3.1.3" and all worked fine. But now I have increased version of gradle "com.android.tools.build:gradle:3.4.0" and Android Studio shows me the error: "Could not find or load main class my.full.package.JsoniterCodegen". I can't find reason of fail. Are there any suggestions?