Flutter Error FAILURE: Build failed with an exception - flutter

Question

FAILURE: Build failed with an exception.
* Where:
Build file 'F:\Flutter New Application (Game Conduct)\gamershub\android\app\build.gradle' line: 24
* What went wrong:
A problem occurred evaluating project ':app'.
> ASCII
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BUILD FAILED in 21s
Running Gradle task 'assembleDebug'...
Running Gradle task 'assembleDebug'... Done 23.6s
Exception: Gradle task assembleDebug failed with exit code 1
My build.gradle file
buildscript {
ext.kotlin_version = '1.3.50'
repositories {
jcenter()
google()
}
dependencies {
classpath 'com.google.gms:google-services:4.3.3'
classpath 'com.android.tools.build:gradle:3.2.1'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
}
allprojects {
repositories {
google()
jcenter()
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
task clean(type: Delete) {
delete rootProject.buildDir
}
I am getting the error while running the flutter apk event i have no issues in command flutter doctor -v. But when i try to run my code i am gettent the error. Even after i have created the new project using flutter create i am getting the the same error in that project also.