[Solved] Module was compiled with an incompatible version of Kotlin

While running the Flutter Android app, you may encounter a "Module was compiled with an incompatible version of Kotlin" error during compiling. See the solution below to solve this error in your Flutter App. 

e: Incompatible classes were found in dependencies. Remove them from the classpath or use '-Xskip-metadata-version-check' to suppress errors

e: C:/Users/Hari Pd. Chaudhary/.gradle/caches/transforms-2/files-2.1/24fa3aa8d2270e5eb067bbe36e9b7563/jetified-kotlin-stdlib-1.5.10.jar!/META-INF/kotlin-stdlib.kotlin_module: 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.

e: C:/Users/Hari Pd. Chaudhary/.gradle/caches/transforms-2/files-2.1/77bab1911042ab2c6d5cc0b2e2ee053c/jetified-kotlin-stdlib-common-1.5.10.jar!/META-INF/kotlin-stdlib-common.kotlin_module: 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.

e: C:/Users/Hari Pd. Chaudhary/.gradle/caches/transforms-2/files-2.1/bd92f9b27f3f577322c07e31476e006e/jetified-core-ktx-1.6.0-api.jar!/META-INF/core-ktx_release.kotlin_module: 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.

Open android/build.gradle file and increase the version of ext.kotlin_version to a compatible version of Kotlin. In our case, we change:

ext.kotlin_version = '1.3.50'

TO

ext.kotlin_version = '1.4.32'

Your build.gradle file may look like this:

buildscript {
    ext.kotlin_version = '1.4.32'
    repositories {
        google()
        mavenCentral()
    }

Now hit the command below:

flutter clean

Now run your app again.

In this way, you can solve the "Module was compiled with an incompatible version of Kotlin" error in the Flutter App. 

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