specified for property 'mainMergedManifest' does not exist. code example

Example: specified for property 'mainMergedManifest' does not exist.

build.gradle (Project)
FROM classpath "com.android.tools.build:gradle:4.1.2"
TO classpath "com.android.tools.build:gradle:4.0.2"

gradle-wrapper.properties
FROM distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
To distributionUrl=https\://services.gradle.org/distributions/gradle-6.4.1-bin.zip