Android Studio Kotlin Complier Error node.sym must not be null

Suddenly my android studio gradle build fails with unknown error:

java.lang.IllegalStateException: failed to analyze: com.sun.tools.javac.util.ClientCodeException: java.lang.IllegalStateException: node.sym must not be null

I tried everything like reverting my project back to previous version and invaliding cache and restart but still the error persists i don't really know what is happening:

Here is my gradle:

ext {
configuration = [
compileVersion: 27,
minSdk : 14,
targetSdk : 25,
version_code : 5,
version_name : "1.0.0"
]

libraries = [
supportVersion: '1.0.0-beta01'
]
}
buildscript {
ext.kotlin_version = '1.3.50'

repositories {
google()
jcenter()
maven {
url 'https://maven.fabric.io/public'
}
}
dependencies {

classpath 'com.android.tools.build:gradle:3.2.1'
classpath 'com.google.gms:google-services:4.2.0'
classpath "io.realm:realm-gradle-plugin:6.0.1"
classpath 'io.fabric.tools:gradle:1.27.0'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

// classpath "com.android.tools.build:gradle:${buildConfig.gradlePlugin}"

// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}

allprojects {
repositories {
google()
jcenter()
maven {
url "https://jitpack.io"
}
maven {
url "https://maven.google.com"
}
}
}

task clean(type: Delete) {
delete rootProject.buildDir
}


Build gradle file:

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-android'
apply plugin: 'io.fabric'

apply plugin: 'kotlin-kapt'

apply plugin: 'realm-android'

android {
compileSdkVersion 29
defaultConfig {
applicationId "com.social.media.post.graphics.template.card.maker"
minSdkVersion 21
targetSdkVersion 29
versionCode 6
versionName "1.5"

multiDexEnabled true

vectorDrawables.useSupportLibrary = true

testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

}

buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}

dexOptions {
jumboMode true
javaMaxHeapSize "4g"
}
compileOptions {
sourceCompatibility = 1.8
targetCompatibility = 1.8
}
}

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.github.smarteist:autoimageslider:1.3.2'
implementation 'me.grantland:autofittextview:0.2.1'
//noinspection GradleCompatible
implementation 'org.greenrobot:eventbus:3.1.1'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'com.google.android.material:material:1.1.0-alpha10'
implementation 'com.github.QuadFlask:colorpicker:0.0.13'
implementation 'com.github.kaushikthedeveloper:squarelayout:0.0.3'
implementation project(':imagelibrary')
implementation 'com.squareup.picasso:picasso:2.5.2'
implementation 'com.github.bumptech.glide:glide:4.10.0'
implementation 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
implementation 'com.intuit.sdp:sdp-android:1.0.5'
implementation 'com.intuit.ssp:ssp-android:1.0.5'
implementation 'androidx.percentlayout:percentlayout:1.0.0'
implementation 'com.github.MasayukiSuda:BubbleLayout:v1.2.1'
//Fuel
implementation 'com.github.kittinunf.fuel:fuel:2.2.1'
implementation 'com.github.kittinunf.fuel:fuel-android:2.2.1'
implementation 'com.github.kittinunf.fuel:fuel-gson:2.2.1'

implementation 'com.google.android.material:material:1.0.0'
//Gson
implementation 'com.google.code.gson:gson:2.7'
implementation 'com.github.fondesa:kpermissions:2.0.2'
//Coroutines
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.1.0'
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:0.30.1-eap13'
implementation 'com.isseiaoki:simplecropview:1.1.4'
implementation 'com.github.hotchemi:permissionsdispatcher:2.3.1'
annotationProcessor 'com.github.hotchemi:permissionsdispatcher-processor:2.3.1'
// all common code dependencies
implementation 'com.eyalbira.loadingdots:loading-dots:1.0.2'
implementation 'androidx.multidex:multidex:2.0.1'
implementation 'com.google.code.gson:gson:2.8.5'
implementation 'com.github.sujithkanna:smileyrating:1.6.8'
implementation 'com.daimajia.slider:library:1.1.5@aar'
implementation 'com.nineoldandroids:library:2.4.0'
implementation 'com.github.warkiz.widget:indicatorseekbar:2.1.2'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.3.0-alpha02'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0-alpha02'
implementation 'com.github.Theophrast:SquareImageView:1.0.1'
//For Firebase
implementation 'com.google.firebase:firebase-core:17.2.0'
implementation 'com.crashlytics.sdk.android:crashlytics:2.10.1'
//For Google Mediation
implementation 'com.google.android.gms:play-services-ads:18.2.0'
// For Fb Mediation and FB ads
implementation 'com.facebook.android:audience-network-sdk:5.6.0'
implementation 'com.google.ads.mediation:facebook:5.6.0.0'
implementation 'com.makeramen:roundedimageview:2.3.0'
//for unzip .zip file
implementation 'com.github.ghost1372:Mzip-Android:0.4.0'
//lottie animation
implementation 'com.airbnb.android:lottie:3.0.7'
// for equal spacing around recycler view
/* implementation('com.github.thekhaeng:recycler-margin:1.2.1') {
exclude group: 'com.android.support', module: 'recyclerview-v7'
}*/
// subscribe and in - app
implementation 'com.anjlab.android.iab.v3:library:1.0.44'
implementation 'androidx.core:core-ktx:+'
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
//Sectioned Recyclerview
implementation 'com.github.IntruderShanky:Sectioned-RecyclerView:2.1.1'
//Ripple Effect
implementation 'com.github.traex.rippleeffect:library:1.3'
//Tagview
compile 'com.veinhorn.tagview:library:1.0.4'
}
apply plugin: 'com.google.gms.google-services'
repositories {
mavenCentral()
}

I've had this issue a few times.

The only thing that has worked for me is upgrading/downgrading Android Gradle Plugin. Try using 3.5.3.

In my case, I was using 3.6.0-rc02. After downgrading to 3.5.3, the issue went away.

I had the same error, and **it was related to kotlin and java files with the same name.**

The issue appeared after I converted a java file to kotlin in one branch, and then merged my branches, but both files remained in the project.

The error didn't show the duplicated file name, but after adding

kapt.incremental.apt=false

to "gradle.properties" as suggested by this article:

[To see links please register here]

after disabling incremental build, the duplicate file error appeared in my build results and I knew the duplicated file name, so I removed the java file.

I enabled incremental kapt afterwards, because incremental build is faster.

It also happened when source is set like:

sourceSets {
main {
java.srcDirs += 'build/generated/data_binding_base_class_source_out/'
}
}

And there are multiple build types. Folders in data_binding_base_class_source_out intercepts and it causes the problem.

**Fix:**

sourceSets {
debug {
java.srcDirs += 'build/generated/data_binding_base_class_source_out/debug/'
}
release {
java.srcDirs += 'build/generated/data_binding_base_class_source_out/release/'
}
}