build.gradle启动时Unexpected character: '?'

build.gradle启动时Unexpected character: '?'

Build file 'D:\qaq\app\build.gradle' line: 1

Could not compile build file 'D:\qaq\app\build.gradle'.

startup failed:
build file 'D:\qaq\app\build.gradle': 1: Unexpected character: '?' @ line 1, column 1.
?apply plugin: 'com.android.application'
^

运行的时候，第一句的开头总会多一个问号，检查代码并没有。
部分代码如下

apply plugin: 'com.android.application'
android {
compileSdkVersion 28
buildToolsVersion "30.0.2"

defaultConfig {
    applicationId "com.neldtv.mips"
    minSdkVersion 24
    targetSdkVersion 28
    versionCode 1
    versionName "5.7.0.142"
    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    multiDexEnabled true

    ndk{
        abiFilters 'armeabi-v7a'
    }

}