Cannot access class 'java.lang.String'. Check your module classpath for missing or conflicting dependencies

I was setting up a java/kotlin library for my android project in which i was creating a data class (model) with moshi converter. But the issue is the annotation @JsonClass and at other places i am getting this error

Cannot access class 'java.lang.String'. Check your module classpath for missing or conflicting dependencies

The Data class

The data class image

The error shown by IDE

The library gradle code

plugins {
    id 'java-library'
    id 'kotlin'
    id 'kotlin-kapt'
}

java {
    sourceCompatibility = JavaVersion.VERSION_11
    targetCompatibility = JavaVersion.VERSION_11
}
dependencies {

    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    implementation "com.squareup.retrofit2:retrofit:2.9.0"
    implementation "com.squareup.retrofit2:converter-moshi:2.9.0"
    implementation "com.squareup.moshi:moshi:1.12.0"
    kapt "com.squareup.moshi:moshi-kotlin-codegen:1.12.0"
} 

And the app level build.gradle file

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    ext {
        compose_version = '1.1.0-alpha01'
        kotlin_version = '1.5.21'
    }
    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:7.0.0"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

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

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

app level gradle code

plugins {
    id 'com.android.application'
    id 'kotlin-android'
}

android {
    compileSdk 30
    buildToolsVersion "30.0.3"

    defaultConfig {
        applicationId "com.example.composeappname"
        minSdk 23
        targetSdk 30
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.tests.runner.AndroidJUnitRunner"
        vectorDrawables {
            useSupportLibrary true
        }
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_11
        targetCompatibility JavaVersion.VERSION_11
    }
    kotlinOptions {
        jvmTarget = '1.8'
        useIR = true
    }
    buildFeatures {
        compose true
    }
    composeOptions {
        kotlinCompilerExtensionVersion compose_version
        kotlinCompilerVersion '1.4.32'
    }
}

dependencies {

    implementation 'androidx.core:core-ktx:1.6.0'
    implementation 'androidx.appcompat:appcompat:1.3.1'
    implementation 'com.google.android.material:material:1.4.0'
    implementation "androidx.compose.ui:ui:$compose_version"
    implementation "androidx.compose.material:material:$compose_version"
    implementation "androidx.compose.ui:ui-tooling:$compose_version"
    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
    implementation 'androidx.activity:activity-compose:1.3.1'

    implementation project(":libmynetworklibrary")
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.tests.ext:junit:1.1.3'
    androidTestImplementation 'androidx.tests.espresso:espresso-core:3.4.0'
    androidTestImplementation "androidx.compose.ui:ui-tests-junit4:$compose_version"
}