Grade Build Task Failed

I am current working on a project from hyperskill.org using IntelliJ IDEA, this project uses jcommander -1.78 for parsing command-line arguments. When i use the command “gradle build” it outputs a bunch of error based on the jcommander-1.78

Output:

11:09:36 AM: Executing task ‘build’…

Task :wrapper

BUILD SUCCESSFUL in 1m 17s
1 actionable task: 1 executed

Task :Encryption-Decryption-task:compileKotlin

Task :Encryption-Decryption-task:compileJava
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\AlgorithmValidate.java:2: error: package com.beust.jcommander does not exist
import com.beust.jcommander.IParameterValidator;
^
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\AlgorithmValidate.java:3: error: package com.beust.jcommander does not exist
import com.beust.jcommander.ParameterException;
^
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\AlgorithmValidate.java:7: error: cannot find symbol
public class AlgorithmValidate implements IParameterValidator{
^
symbol: class IParameterValidator
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\AlgorithmValidate.java:9: error: cannot find symbol
public void validate(String s, String s1) throws ParameterException {
^
symbol: class ParameterException
location: class AlgorithmValidate
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\FileConverter.java:3: error: package com.beust.jcommander does not exist
import com.beust.jcommander.IStringConverter;
^
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\FileConverter.java:7: error: cannot find symbol
public class FileConverter implements IStringConverter {
^
symbol: class IStringConverter
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\FileValidation.java:3: error: package com.beust.jcommander does not exist
import com.beust.jcommander.IParameterValidator;
^
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\FileValidation.java:4: error: package com.beust.jcommander does not exist
import com.beust.jcommander.ParameterException;
^
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\FileValidation.java:7: error: cannot find symbol
public class FileValidation implements IParameterValidator {
^
symbol: class IParameterValidator
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\FileValidation.java:10: error: cannot find symbol
public void validate(String s, String s1) throws ParameterException {
^
symbol: class ParameterException
location: class FileValidation
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\MainArgs.java:3: error: package com.beust.jcommander does not exist
import com.beust.jcommander.Parameter;
^
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\PositiveInt.java:2: error: package com.beust.jcommander does not exist
import com.beust.jcommander.IParameterValidator;
^
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\PositiveInt.java:3: error: package com.beust.jcommander does not exist
import com.beust.jcommander.ParameterException;
^
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\PositiveInt.java:5: error: cannot find symbol
public class PositiveInt implements IParameterValidator{
^
symbol: class IParameterValidator
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\PositiveInt.java:7: error: cannot find symbol
public void validate(String name, String value) throws ParameterException {
^
symbol: class ParameterException
location: class PositiveInt
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\encryptdecrypt\Main.java:4: error: package com.beust.jcommander does not exist
import com.beust.jcommander.JCommander;
^
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\MainArgs.java:33: error: cannot find symbol
@Parameter(names = {"-mode"}, description = “encryption or decryption”)
^
symbol: class Parameter
location: class MainArgs
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\MainArgs.java:36: error: cannot find symbol
@Parameter(names = {"-key"}, description = “key”, validateWith = PositiveInt.class)
^
symbol: class Parameter
location: class MainArgs
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\MainArgs.java:39: error: cannot find symbol
@Parameter(names = {"-alg"}, description = “algorithm”, validateWith = AlgorithmValidate.class)
^
symbol: class Parameter
location: class MainArgs
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\MainArgs.java:42: error: cannot find symbol
@Parameter(names = {"-data"}, description = “data to encrypt or decrypt”)
^
symbol: class Parameter
location: class MainArgs
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\MainArgs.java:45: error: cannot find symbol
@Parameter(names = {"-in"}, converter = FileConverter.class, description = “data file”, validateWith = FileValidation.class)
^
symbol: class Parameter
location: class MainArgs
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\MainArgs.java:48: error: cannot find symbol
@Parameter(names = {"-out"}, description = “output file”)
^
symbol: class Parameter
location: class MainArgs
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\AlgorithmValidate.java:8: error: method does not override or implement a method from a supertype
@Override
^
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\AlgorithmValidate.java:13: error: cannot find symbol
throw new ParameterException(s1 + " invalid algorithm name");
^
symbol: class ParameterException
location: class AlgorithmValidate
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\FileConverter.java:8: error: method does not override or implement a method from a supertype
@Override
^
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\FileValidation.java:9: error: method does not override or implement a method from a supertype
@Override
^
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\FileValidation.java:12: error: cannot find symbol
throw new ParameterException(s1 + “file not found”);
^
symbol: class ParameterException
location: class FileValidation
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\PositiveInt.java:6: error: method does not override or implement a method from a supertype
@Override
^
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\argparsepack\PositiveInt.java:10: error: cannot find symbol
throw new ParameterException(name + " must be greater than or equal to 0");
^
symbol: class ParameterException
location: class PositiveInt
C:\Users\ADMIN\IdeaProjects\Encryption-Decryption\Encryption-Decryption\task\src\encryptdecrypt\Main.java:18: error: cannot find symbol
JCommander.newBuilder()
^
symbol: variable JCommander
location: class Main
30 errors

Task :Encryption-Decryption-task:compileJava FAILED

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ‘:Encryption-Decryption-task:compileJava’.

Compilation failed; see the compiler error output for details.

• 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

BUILD FAILED in 5s
2 actionable tasks: 2 executed
11:11:13 AM: Task execution finished ‘build’.

IntelliJ auto generated build.gradle file

buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath “org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.21”
}
}

subprojects {
apply plugin: ‘application’
apply plugin: ‘java’
apply plugin: “kotlin”
apply plugin: ‘idea’

sourceCompatibility = 11

repositories {
    mavenCentral()
    maven { url "https://jitpack.io" }
}

dependencies {
    compile files('lib/jcommander-1.78.jar')
    testCompile group: 'junit', name: 'junit', version: '4.12'
    implementation 'com.github.stefanbirkner:system-rules:1.19.0'
    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
    testImplementation 'com.github.hyperskill:hs-test:v7.0.1'
}

sourceSets {
    main.java.srcDir 'src'
    test.java.srcDir 'test'
}

test {
    systemProperty "file.encoding", "utf-8"
    outputs.upToDateWhen { false }
    afterTest { TestDescriptor test, TestResult result ->
        if (result.resultType == TestResult.ResultType.FAILURE) {
            def message = result.exception?.message ?: "Wrong answer"
            def lines = message.readLines()
            println "#educational_plugin FAILED + " + lines[0]
            lines[1..-1].forEach { line ->
                println "#educational_plugin" + line
            }
        }
    }
}

compileJava.options.encoding = 'UTF-8'
tasks.withType(JavaCompile) {
    options.encoding = 'UTF-8'
}

}

wrapper {
gradleVersion = ‘5.3.1’
}

I added compile files(‘lib/jcommander-1.78.jar’) because the other forum said it was the solution to add the dependency to build.gradle and still outputs the same error