NDK is not installed

[singhragvendra503]

build command fastlane internal "package_name:myapp" "build_number:12"

Task :app:buildReleasePreBundle
Task :app:extractReleaseNativeDebugMetadata FAILED

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:extractReleaseNativeDebugMetadata'.

NDK is not installed

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 7m 23s
582 actionable tasks: 51 executed, 531 up-to-date
\e[0m
root@8547bb57c48f:/project/android# env

ANDROID_SDK_TOOLS_VERSION=4333796
HOSTNAME=8547bb57c48f
LANGUAGE=en_US.UTF-8
ANDROID_SDK_HOME=/opt/android-sdk
FLUTTER_HOME=/opt/flutter
JENV_SHELL=bash
ANDROID_NDK=/opt/android-sdk/ndk/current
PWD=/project/android
BUILD_DATE=
TZ=America/Los_Angeles
HOME=/root
LANG=en_US.UTF-8
JDK_PLATFORM=amd64
SOURCE_BRANCH=
ANDROID_NDK_HOME=/opt/android-sdk/ndk/current
ANDROID_HOME=/opt/android-sdk
TERM=dumb
SHLVL=1
SOURCE_COMMIT=
LC_ALL=en_US.UTF-8
PATH=/root/.jenv/shims:/root/.jenv/bin:/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt/android-sdk/emulator:/opt/android-sdk/tools/bin:/opt/android-sdk/tools:/opt/android-sdk/platform-tools:/opt/android-sdk/ndk/current:/opt/flutter/bin:/opt/flutter/bin/cache/dart-sdk/bin
JENV_LOADED=1
NODE_VERSION=14.x
DEBIAN_FRONTEND=noninteractive
DOCKER_TAG=
_=/bin/env
OLDPWD=/project/

root@8547bb57c48f:/project/android# ls /opt/android-sdk/ndk/current
build CHANGELOG.md meta ndk-build ndk-gdb ndk-lldb ndk-stack ndk-which NOTICE NOTICE.toolchain package.xml prebuilt python-packages README.md shader-tools simpleperf source.properties sources toolchains wrap.sh

[singhragvendra503]

I am resolving this by creating a file name local.properties and putting this content ndk.dir=/opt/android-sdk/ndk/current But I don't understand, why it is not working ANDROID_NDK=/opt/android-sdk/ndk/current. please help me