java.lang.NoClassDefFoundError Caused by: java.lang.ClassNotFoundException

I have split my project into two modules: app and domain, there should be more for clean-architecture, but I have met a problem before I want to move forward.

I have added a new module :domain: and added a test folder inside, and moved my tests from the :app module into this folder. Unfortunately while testing the file I have met the error

java.lang.NoClassDefFoundError Lbel/mobile/domain/interactor/accounts/GetAccountsList;

Caused by: java.lang.ClassNotFoundException:bel.mobile.domain.interactor.accounts.GetAccountsList

Here is my build.gradle file for module domain:

apply plugin: 'java'
apply plugin: 'kotlin'

sourceCompatibility = "1.8"
targetCompatibility = "1.8"

buildscript {
    ext.kotlin_version = '1.2.10'
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        }
}
repositories {
    mavenCentral()
}
compileKotlin {
    kotlinOptions {
        jvmTarget = "1.8"
    }
}
compileTestKotlin {
    kotlinOptions {
        jvmTarget = "1.8"
    }
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation "io.reactivex.rxjava2:rxjava:$project.ext.rxJavaVersion"
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
    implementation "junit:junit:$project.ext.junitVersion"
    implementation "org.mockito:mockito-core:$project.ext.mockitoVersion"
    implementation "com.google.truth:truth:$project.ext.truthVersion"
}

Here is domain.iml file:

<?xml version="1.0" encoding="UTF-8"?>
<module external.linked.project.id=":domain" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$/.." external.system.id="GRADLE" type="JAVA_MODULE" version="4">
  <component name="FacetManager">
    <facet type="android-gradle" name="Android-Gradle">
      <configuration>
        <option name="GRADLE_PROJECT_PATH" value=":domain" />
      </configuration>
    </facet>
    <facet type="java-gradle" name="Java-Gradle">
      <configuration>
        <option name="BUILD_FOLDER_PATH" value="$MODULE_DIR$/build" />
        <option name="BUILDABLE" value="true" />
      </configuration>
    </facet>
    <facet type="kotlin-language" name="Kotlin">
      <configuration version="3" platform="JVM 1.8" useProjectSettings="false">
        <compilerSettings />
        <compilerArguments>
          <option name="destination" value="$MODULE_DIR$/build/classes/kotlin/main" />
          <option name="noStdlib" value="true" />
          <option name="noReflect" value="true" />
          <option name="moduleName" value="domain" />
          <option name="jvmTarget" value="1.8" />
          <option name="addCompilerBuiltIns" value="true" />
          <option name="loadBuiltInsFromDependencies" value="true" />
          <option name="languageVersion" value="1.2" />
          <option name="apiVersion" value="1.2" />
          <option name="pluginOptions">
            <array />
          </option>
          <option name="pluginClasspaths">
            <array />
          </option>
        </compilerArguments>
      </configuration>
    </facet>
  </component>
  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
    <output url="file://$MODULE_DIR$/build/classes/java/main" />
    <output-test url="file://$MODULE_DIR$/build/classes/java/test" />
    <exclude-output />
    <content url="file://$MODULE_DIR$">
      <sourceFolder url="file://$MODULE_DIR$/src/main/kotlin" isTestSource="false" />
      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
      <sourceFolder url="file://$MODULE_DIR$/src/test/kotlin" isTestSource="true" />
      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
      <sourceFolder url="file://$MODULE_DIR$/src/test/resources" type="java-test-resource" />
      <excludeFolder url="file://$MODULE_DIR$/.gradle" />
      <excludeFolder url="file://$MODULE_DIR$/build" />
    </content>
    <orderEntry type="inheritedJdk" />
    <orderEntry type="sourceFolder" forTests="false" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="rxjava-2.1.6" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="kotlin-stdlib-jdk8-1.2.10" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="truth-0.39" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="junit-4.12" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="mockito-core-2.8.9" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="reactive-streams-1.0.1" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="kotlin-stdlib-jdk7-1.2.10" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="kotlin-stdlib-1.2.10" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="hamcrest-core-1.3" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="byte-buddy-1.6.14" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="byte-buddy-agent-1.6.14" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="objenesis-2.5" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="guava-23.4-android" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="error_prone_annotations-2.1.3" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="annotations-13.0" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="jsr305-1.3.9" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="j2objc-annotations-1.1" level="project" />
    <orderEntry type="library" exported="" scope="PROVIDED" name="animal-sniffer-annotations-1.14" level="project" />
  </component>
</module>

What I have tried to do so far:

• I have tried many different ways and checked many solutions regarding the same error to solve the problem, but none of them fix it
• I have checked that simple test is working inside of this folder.
• I have added Multidex