Execution failed for task ':unityLibrary:BuildIl2CppTask'.

[khal-it]

Describe the bug
I'm trying to build my app on android but it fails with the message:

Execution failed for task ':unityLibrary:BuildIl2CppTask'.
[        ] > Process 'command '/Applications/Unity/Hub/Editor/2020.1.17f1/Unity.app/Contents/MonoBleedingEdge/bin/mono'' finished with non-zero exit value 1.

The full Error message looks like that:

[        ] Running il2cpp.exe in workstation GC mode.
[        ] il2cpp.exe didn't catch exception: System.InvalidOperationException: Sequence contains no matching element
[        ]   at System.Linq.Enumerable.First[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate) [0x00011] in
<351e49e2a5bf4fd6beabb458ce2255f3>:0 
[        ]   at Unity.Options.OptionsParser.ParseEnumValue (System.Type type, System.String value) [0x00024] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.ParseValue (System.Type type, System.String value, System.Func`3[T1,T2,TResult] customValueParser) [0x00019] in
<7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.SetBasicType (System.Reflection.FieldInfo field, System.String v, System.Func`3[T1,T2,TResult] customValueParser, System.Object
instance) [0x00008] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser+<>c__DisplayClass35_0.<ActionFor>b__5 (System.String v) [0x00000] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet+<>c__DisplayClass14_0.<Add>b__0 (NDesk.Options.OptionValueCollection v) [0x0000d] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet+ActionOption.OnParseComplete (NDesk.Options.OptionContext c) [0x0000c] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.Option.Invoke (NDesk.Options.OptionContext c) [0x00000] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet.ParseValue (System.String option, NDesk.Options.OptionContext c) [0x00089] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet.Parse (System.String argument, NDesk.Options.OptionContext context) [0x0007c] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet.Parse (System.Collections.Generic.IEnumerable`1[T] arguments, System.String currentDirectory) [0x00171] in
<7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.Parse (System.Collections.Generic.IEnumerable`1[T] commandLine, System.Func`3[T1,T2,TResult] customValueParser, System.String
currentDirectory, System.Object[] instances) [0x00009] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.Prepare (System.String[] commandLine, System.Type[] types, System.Func`3[T1,T2,TResult] customValueParser, System.String
currentDirectory, System.Object[] instances) [0x00021] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.Prepare (System.String[] commandLine, System.Type[] types, System.Func`3[T1,T2,TResult] customValueParser, System.String
currentDirectory) [0x00000] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at il2cpp.Il2CppOptionParser.ParseArguments (System.String[] args, System.Boolean& continueToRun, System.Int32& exitCode, Unity.IL2CPP.Common.RuntimePlatform&
platform, Unity.IL2CPP.Building.BuildingOptions& buildingOptions, System.String& profilerOutput) [0x0005d] in <3be9f628f5fa469389bd6a91a579ba8a>:0 
[        ]   at il2cpp.Program.Run (System.String[] args, System.Boolean setInvariantCulture) [0x00040] in <3be9f628f5fa469389bd6a91a579ba8a>:0 
[        ]   at il2cpp.Program.Main (System.String[] args) [0x00000] in <3be9f628f5fa469389bd6a91a579ba8a>:0 
[        ] Unhandled Exception:
[        ] System.InvalidOperationException: Sequence contains no matching element
[        ]   at System.Linq.Enumerable.First[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate) [0x00011] in
<351e49e2a5bf4fd6beabb458ce2255f3>:0 
[        ]   at Unity.Options.OptionsParser.ParseEnumValue (System.Type type, System.String value) [0x00024] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.ParseValue (System.Type type, System.String value, System.Func`3[T1,T2,TResult] customValueParser) [0x00019] in
<7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.SetBasicType (System.Reflection.FieldInfo field, System.String v, System.Func`3[T1,T2,TResult] customValueParser, System.Object
instance) [0x00008] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser+<>c__DisplayClass35_0.<ActionFor>b__5 (System.String v) [0x00000] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet+<>c__DisplayClass14_0.<Add>b__0 (NDesk.Options.OptionValueCollection v) [0x0000d] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet+ActionOption.OnParseComplete (NDesk.Options.OptionContext c) [0x0000c] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.Option.Invoke (NDesk.Options.OptionContext c) [0x00000] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet.ParseValue (System.String option, NDesk.Options.OptionContext c) [0x00089] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet.Parse (System.String argument, NDesk.Options.OptionContext context) [0x0007c] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet.Parse (System.Collections.Generic.IEnumerable`1[T] arguments, System.String currentDirectory) [0x00171] in
<7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.Parse (System.Collections.Generic.IEnumerable`1[T] commandLine, System.Func`3[T1,T2,TResult] customValueParser, System.String
currentDirectory, System.Object[] instances) [0x00009] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.Prepare (System.String[] commandLine, System.Type[] types, System.Func`3[T1,T2,TResult] customValueParser, System.String
currentDirectory, System.Object[] instances) [0x00021] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.Prepare (System.String[] commandLine, System.Type[] types, System.Func`3[T1,T2,TResult] customValueParser, System.String
currentDirectory) [0x00000] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at il2cpp.Il2CppOptionParser.ParseArguments (System.String[] args, System.Boolean& continueToRun, System.Int32& exitCode, Unity.IL2CPP.Common.RuntimePlatform&
platform, Unity.IL2CPP.Building.BuildingOptions& buildingOptions, System.String& profilerOutput) [0x0005d] in <3be9f628f5fa469389bd6a91a579ba8a>:0 
[        ]   at il2cpp.Program.Run (System.String[] args, System.Boolean setInvariantCulture) [0x00040] in <3be9f628f5fa469389bd6a91a579ba8a>:0 
[        ]   at il2cpp.Program.Main (System.String[] args) [0x00038] in <3be9f628f5fa469389bd6a91a579ba8a>:0 
[        ] [ERROR] FATAL UNHANDLED EXCEPTION: System.InvalidOperationException: Sequence contains no matching element
[        ]   at System.Linq.Enumerable.First[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate) [0x00011] in
<351e49e2a5bf4fd6beabb458ce2255f3>:0 
[        ]   at Unity.Options.OptionsParser.ParseEnumValue (System.Type type, System.String value) [0x00024] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.ParseValue (System.Type type, System.String value, System.Func`3[T1,T2,TResult] customValueParser) [0x00019] in
<7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.SetBasicType (System.Reflection.FieldInfo field, System.String v, System.Func`3[T1,T2,TResult] customValueParser, System.Object
instance) [0x00008] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser+<>c__DisplayClass35_0.<ActionFor>b__5 (System.String v) [0x00000] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet+<>c__DisplayClass14_0.<Add>b__0 (NDesk.Options.OptionValueCollection v) [0x0000d] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet+ActionOption.OnParseComplete (NDesk.Options.OptionContext c) [0x0000c] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.Option.Invoke (NDesk.Options.OptionContext c) [0x00000] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet.ParseValue (System.String option, NDesk.Options.OptionContext c) [0x00089] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet.Parse (System.String argument, NDesk.Options.OptionContext context) [0x0007c] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at NDesk.Options.OptionSet.Parse (System.Collections.Generic.IEnumerable`1[T] arguments, System.String currentDirectory) [0x00171] in
<7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.Parse (System.Collections.Generic.IEnumerable`1[T] commandLine, System.Func`3[T1,T2,TResult] customValueParser, System.String
currentDirectory, System.Object[] instances) [0x00009] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.Prepare (System.String[] commandLine, System.Type[] types, System.Func`3[T1,T2,TResult] customValueParser, System.String
currentDirectory, System.Object[] instances) [0x00021] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at Unity.Options.OptionsParser.Prepare (System.String[] commandLine, System.Type[] types, System.Func`3[T1,T2,TResult] customValueParser, System.String
currentDirectory) [0x00000] in <7ba99c4b386f49249f563198b86bf734>:0 
[        ]   at il2cpp.Il2CppOptionParser.ParseArguments (System.String[] args, System.Boolean& continueToRun, System.Int32& exitCode, Unity.IL2CPP.Common.RuntimePlatform&
platform, Unity.IL2CPP.Building.BuildingOptions& buildingOptions, System.String& profilerOutput) [0x0005d] in <3be9f628f5fa469389bd6a91a579ba8a>:0 
[        ]   at il2cpp.Program.Run (System.String[] args, System.Boolean setInvariantCulture) [0x00040] in <3be9f628f5fa469389bd6a91a579ba8a>:0 
[        ]   at il2cpp.Program.Main (System.String[] args) [0x00038] in <3be9f628f5fa469389bd6a91a579ba8a>:0 
[+3595 ms] > Task :flutter_unity_widget:compileReleaseKotlin
[        ] w:
/Users/Work/.pub-cache/hosted/pub.dartlang.org/flutter_unity_widget-2022.1.0+7/android/src/main/kotlin/com/xraph/plugin/flutter_unity_widget/OverrideUnityActivity.kt: (59,
59): Unnecessary safe call on a non-null receiver of type Bundle?
[        ] w:
/Users/Work/.pub-cache/hosted/pub.dartlang.org/flutter_unity_widget-2022.1.0+7/android/src/main/kotlin/com/xraph/plugin/flutter_unity_widget/OverrideUnityActivity.kt: (62,
54): Unnecessary safe call on a non-null receiver of type Bundle?
[        ] w:
/Users/Work/.pub-cache/hosted/pub.dartlang.org/flutter_unity_widget-2022.1.0+7/android/src/main/kotlin/com/xraph/plugin/flutter_unity_widget/OverrideUnityActivity.kt: (72,
54): Unnecessary safe call on a non-null receiver of type Bundle?
[ +195 ms] FAILURE: Build failed with an exception.
[        ] * Where:
[        ] Build file '/Users/Work/Desktop/SnapNext/OrthomolAR/android/unityLibrary/build.gradle' line: 73
[        ] * What went wrong:
[        ] Execution failed for task ':unityLibrary:BuildIl2CppTask'.
[        ] > Process 'command '/Applications/Unity/Hub/Editor/2020.1.17f1/Unity.app/Contents/MonoBleedingEdge/bin/mono'' finished with non-zero exit value 1
[        ] * 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
[        ] Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
[        ] Use '--warning-mode all' to show the individual deprecation warnings.
[        ] See https://docs.gradle.org/6.7.1/userguide/command_line_interface.html#sec:command_line_warnings
[        ] BUILD FAILED in 50s
[        ] 271 actionable tasks: 255 executed, 16 up-to-date
[ +426 ms] Running Gradle task 'assembleRelease'... (completed in 54.5s)
[  +22 ms] "flutter apk" took 62,197ms.
[   +6 ms] Gradle task assembleRelease failed with exit code 1
[        ] 
           #0      throwToolExit (package:flutter_tools/src/base/common.dart:10:3)
           #1      AndroidGradleBuilder.buildGradleApp (package:flutter_tools/src/android/gradle.dart:400:9)
           <asynchronous suspension>
           #2      AndroidGradleBuilder.buildApk (package:flutter_tools/src/android/gradle.dart:179:5)
           <asynchronous suspension>
           #3      BuildApkCommand.runCommand (package:flutter_tools/src/commands/build_apk.dart:112:5)
           <asynchronous suspension>
           #4      FlutterCommand.run.<anonymous closure> (package:flutter_tools/src/runner/flutter_command.dart:1161:27)
           <asynchronous suspension>
           #5      AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
           <asynchronous suspension>
           #6      CommandRunner.runCommand (package:args/command_runner.dart:209:13)
           <asynchronous suspension>
           #7      FlutterCommandRunner.runCommand.<anonymous closure> (package:flutter_tools/src/runner/flutter_command_runner.dart:281:9)
           <asynchronous suspension>
           #8      AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
           <asynchronous suspension>
           #9      FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:229:5)
           <asynchronous suspension>
           #10     run.<anonymous closure>.<anonymous closure> (package:flutter_tools/runner.dart:62:9)
           <asynchronous suspension>
           #11     AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
           <asynchronous suspension>
           #12     main (package:flutter_tools/executable.dart:94:3)
           <asynchronous suspension>
           
           
[ +152 ms] ensureAnalyticsSent: 147ms
[   +1 ms] Running shutdown hooks
[        ] Shutdown hooks complete
[        ] exiting with code 1

This is my build.gradle file in the android/app directory:

def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw new GradleException('Flutter SDK not found. Define location with flutter.sdk in the local.properties file.')
}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
    flutterVersionCode = '1'
}
def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
    flutterVersionName = '1.0'
}

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
  
    
    buildTypes {
         release {
             signingConfig signingConfigs.debug
         }
        debug {
            signingConfig signingConfigs.debug
        }
        profile {
            signingConfig signingConfigs.debug
        }
        innerTest {
            matchingFallbacks = ['debug', 'release']
        }
   }
    signingConfigs {
        release {
            keyAlias keystoreProperties['keyAlias']
            keyPassword keystoreProperties['keyPassword']
            storeFile keystoreProperties['storeFile'] ? file(keystoreProperties['storeFile']) : null
            storePassword keystoreProperties['storePassword']
        }
    }
    buildTypes {
        debug {
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
        release {
            minifyEnabled false
            shrinkResources false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'

            signingConfig signingConfigs.release
        }
    }
    compileSdkVersion 31

    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        ndkVersion "21.0.6113669"
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId 'com.orthomol.b2bapp'
        minSdkVersion 24
        targetSdkVersion 30
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
        multiDexEnabled true
        
    }
}

flutter {
    source '../..'
}

apply plugin: 'com.google.gms.google-services'


dependencies {
    implementation project(':unityLibrary')

    

    implementation platform('com.google.firebase:firebase-bom:26.5.0')
    implementation 'com.google.firebase:firebase-analytics-ktx'

    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'com.android.support:multidex:1.0.3'
}

This is the Gradle File in the android/unityLibrary directory that was generated by unity :

// GENERATED BY UNITY. REMOVE THIS COMMENT TO PREVENT OVERWRITING WHEN EXPORTING AGAIN

apply plugin: 'com.android.library'


dependencies {
    implementation(name: 'unity-classes', ext:'jar')
    implementation(name: 'ARPresto', ext:'aar')
    implementation(name: 'NatCorder', ext:'aar')
    implementation(name: 'NatRender', ext:'aar')
    implementation(name: 'NativeShare', ext:'aar')
    implementation(name: 'UnityARCore', ext:'aar')
    implementation(name: 'arcore_client', ext:'aar')
    implementation(name: 'unityandroidpermissions', ext:'aar')
}

android {
    buildTypes {
         release {
             signingConfig signingConfigs.debug
         }
        debug {
            signingConfig signingConfigs.debug
        }
        profile {
            signingConfig signingConfigs.debug
        }
        innerTest {
            matchingFallbacks = ['debug', 'release']
        }
    }
    compileSdkVersion 29
    buildToolsVersion '30.0.2'

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    defaultConfig {
        minSdkVersion 24
        targetSdkVersion 29
        ndk {
            abiFilters 'armeabi-v7a', 'arm64-v8a'
        }
        ndkVersion "21.0.6113669"
        versionCode 212
        versionName '1.0'
        consumerProguardFiles 'proguard-unity.txt'
    }

    lintOptions {
        abortOnError false
    }

    aaptOptions {
        ignoreAssetsPattern = "!.svn:!.git:!.ds_store:!*.scc:.*:!CVS:!thumbs.db:!picasa.ini:!*~"
    }

    packagingOptions {
        doNotStrip '*/armeabi-v7a/*.so'
        doNotStrip '*/arm64-v8a/*.so'
    }
}

def getSdkDir() {
    Properties local = new Properties()
    local.load(new FileInputStream("${rootDir}/local.properties"))
    return local.getProperty('sdk.dir')
}

def BuildIl2Cpp(String workingDir, String targetDirectory, String architecture, String abi, String configuration) {
    exec {
        commandLine("/Applications/Unity/Hub/Editor/2020.1.17f1/Unity.app/Contents/MonoBleedingEdge/bin/mono",
            workingDir + "/src/main/Il2CppOutputProject/IL2CPP/build/deploy/net471/il2cpp.exe",
            "--compile-cpp",
            "--libil2cpp-static",
            "--platform=Android",
            "--architecture=" + architecture,
            "--configuration=" + configuration,
            "--outputpath=" + workingDir + targetDirectory + abi + "/libil2cpp.so",
            "--cachedirectory=" + workingDir + "/build/il2cpp_"+ abi + "_" + configuration + "/il2cpp_cache",
            "--additional-include-directories=" + workingDir + "/src/main/Il2CppOutputProject/IL2CPP/external/bdwgc/include",
            "--additional-include-directories=" + workingDir + "/src/main/Il2CppOutputProject/IL2CPP/libil2cpp/include",
            "--tool-chain-path=" + android.ndkDirectory,
            "--map-file-parser=" + workingDir + "/src/main/Il2CppOutputProject/IL2CPP/MapFileParser/MapFileParser.exe",
            "--generatedcppdir=" + workingDir + "/src/main/Il2CppOutputProject/Source/il2cppOutput",
            "--baselib-directory=" + workingDir + "/src/main/jniStaticLibs/" + abi,
            "--dotnetprofile=unityaot")
        environment "ANDROID_SDK_ROOT", getSdkDir()
    }
    delete workingDir + targetDirectory + abi + "/libil2cpp.sym.so"
    ant.move(file: workingDir + targetDirectory + abi + "/libil2cpp.dbg.so", tofile: workingDir + "/symbols/" + abi + "/libil2cpp.so")
}

android {
    task BuildIl2CppTask {
        doLast {
              BuildIl2Cpp(projectDir.toString().replaceAll('\\\\', '/'), '/src/main/jniLibs/', 'ARMv7', 'armeabi-v7a', 'Master');
              BuildIl2Cpp(projectDir.toString().replaceAll('\\\\', '/'), '/src/main/jniLibs/', 'ARM64', 'arm64-v8a', 'Master');
        }
    }
    afterEvaluate {
        if (project(':unityLibrary').tasks.findByName('mergeDebugJniLibFolders'))
            project(':unityLibrary').mergeDebugJniLibFolders.dependsOn BuildIl2CppTask
        if (project(':unityLibrary').tasks.findByName('mergeReleaseJniLibFolders'))
            project(':unityLibrary').mergeReleaseJniLibFolders.dependsOn BuildIl2CppTask
    }
    sourceSets {
        main {
            jni.srcDirs = ["src/main/Il2CppOutputProject"]
        }
    }
}


    android.sourceSets.main.java.srcDirs += [
        '/Users/Work/Desktop/SnapNext/OrthomolAR/unity/OrthomolARUnity2/Assets/FlutterUnityIntegration/Plugins/Android/OverrideUnityActivity.java'
    ]

Im currently using flutter_unity_widget: ^2022.1.0+4

Please help. Have been stuck since days...

[jamesncl]

What version on Unity are you using?

[timbotimbo]

Any chance you have the "Scripting backend" in the Unity player settings set to "Mono"?
Your error contains /MonoBleedingEdge/bin/mono.

This package requires the scripting backend to be "IL2CPP".

[dawiddszewczyk]

Hi @khalithartmann ,
Try to upgrade unity to 2022.3.4f1 and use fuw-2022.1.1 package also nice to upgrade flutter unity widget.
Later import package few-2022.1.1 into unity project (this package fixes some older issues).