/TypeScript/Class 'kotlin.Unit' was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.

Class 'kotlin.Unit' was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.

what solved my problem is changing this at build.gradle
from
ext.kotlin_version = '1.3.50'
to
ext.kotlin_version = '1.4.32'
or what ever the latest version of Kotlin available and make sure to update Kotlin version on Android Studio as well

Source: stackoverflow.com

Module was compiled with an incompatible version of kotlin. the binary version of its metadata is 1.5.1, expected version is 1.1.16.

for someone who is still looking for answer to this, here is 
the working solution for this problem. In your project level open 
build.gradle file, increase the ext.kotlin.version from whatever 
version you have, to '1.4.32' or whatever the latest version is 
available. Thanks

you can get lasted version from here:
	https://kotlinlang.org/docs/releases.html#release-details

Github:Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15 in android

Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15

-1

Source: exerror.com

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