Where you Flutter Source code locate on download file?change your build gradle to this
Code:buildscript { ext.kotlin_version = '1.5.20' repositories { google() jcenter() } dependencies { classpath 'com.android.tools.build:gradle:4.0.1' classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" classpath 'com.google.gms:google-services:4.3.8' } } components.all { allVariants { withDependencies { deps -> deps.each { dep -> if (dep.group == 'net.minidev' && dep.name =='json-smart') { dep.version { prefer "2.3" } dep.because "resolving dependencies issue" } } } } } allprojects { repositories { google() jcenter() maven { url "https://cardinalcommerceprod.jfrog.io/artifactory/android" credentials { username 'braintree_team_sdk' password 'AKCp8jQcoDy2hxSWhDAUQKXLDPDx6NYRkqrgFLRc3qDrayg6rrCbJpsKKyMwaykVL8FWusJpp' } } } } rootProject.buildDir = '../build' subprojects { project.buildDir = "${rootProject.buildDir}/${project.name}" } subprojects { project.evaluationDependsOn(':app') } task clean(type: Delete) { delete rootProject.buildDir }