Kotlin jar not working in Java Android APP

hey everyone, i am trying to converting a java project into Kotlin. But few modules are generating jar files for them and on migrating them to Kotlin i am facing weird errros, compiling is fine but using these jar files into an android app shows the runtiume error - Didn’t find class “kotlin.jvm.internal.Intrinsics” on path: DexPathList[[zip file

and also this error -
java.lang.NoClassDefFoundError: Failed resolution of: Lkotlin/jvm/internal/Intrinsics;
caused by: java.lang.ClassNotFoundException: Didn’t find class “kotlin.jvm.internal.Intrinsics” on path: DexPaths[[zip file{very large path}

ps: on extracting the jar files before and after migration I found that jar files before migration has only .classes but jar after migration has .classes and .kt also, is this is common for jars made from kotlin files ?