# Android build failed "Cannot invoke method buildToolsVersion() on null object"

**URL:** https://discuss.gradle.org/t/android-build-failed-cannot-invoke-method-buildtoolsversion-on-null-object/25562
**Category:** Help/Discuss
**Created:** [January 24, 2018, 8:51am UTC](https://discuss.gradle.org/t/android-build-failed-cannot-invoke-method-buildtoolsversion-on-null-object/25562 "2018-01-24T08:51:05Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![prog11hera](https://avatars.discourse-cdn.com/v4/letter/p/3be4f8/32.png) [@prog11hera](https://discuss.gradle.org/u/prog11hera)
#### Post date: [January 24, 2018, 8:51am UTC](https://discuss.gradle.org/t/android-build-failed-cannot-invoke-method-buildtoolsversion-on-null-object/25562/1 "2018-01-24T08:51:05Z")

</div>

Hi,

i have problem with building android app on CentOS 7. When i start Gradle to build app, he show me

A problem occurred configuring project ‘:app’.

> Cannot invoke method buildToolsVersion() on null object

i update Gradle and SDK to newest versions.

I looked on google for solution, but with no success. Sorry for my bad english.