unable to build

[IzzySoft]

there are 2 issues. First, your gradle-wrapper is misconfigured:

distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip

That's ancient, and the hash is missing in gradle-wrapper.properties as well. gradle is at 8.9 or higher already.

Next:

classpath 'com.android.tools.build:gradle:2.3.2'

That's no longer available. It was on JCenter, which closed entirely a few weeks ago. Newer versions are available via Google's Maven.

Could you please fix these two issues? Thanks in advance!