I was creating a simple Employee Management System using Spring Boot. I used H2 database.
I am getting the following error:

EmployeemanagerApplicationTests > contextLoads() FAILED
    java.lang.IllegalStateException at DefaultCacheAwareContextLoaderDelegate.java:180
        Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException at ConstructorResolver.java:795
            Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException at ConstructorResolver.java:795
                Caused by: org.springframework.beans.factory.BeanCreationException at AbstractAutowireCapableBeanFactory.java:178
                    Caused by: java.lang.IllegalArgumentException at JpaMetamodelImpl.java:194

This is my Employee Manager Application.java

package com.example.employeemanager;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
@SpringBootApplication
@EnableJpaRepositories("com.example.employeemanager")
@EntityScan("com.example.employeemanager") 
@ComponentScan(basePackages = "com.example.employeemanager")
public class EmployeemanagerApplication {
    public static void main(String[] args) {
        SpringApplication.run(EmployeemanagerApplication.class, args);
    }
}

Here is the Employee.java

package com.example.employeemanager.Entities;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import jakarta.persistence.ManyToOne;
@Entity
public class Employee {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String name;
    private String email;
}

Employee Repository.java

package com.example.employeemanager.Repositories;
import java.util.Optional;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
import com.example.employeemanager.Entities.Employee;
@Repository
public interface EmployeeRepository extends JpaRepository<Employee, Long> {
    @SuppressWarnings("null")
    @Override
    Optional<Employee> findById(Long id);
}

Employee Service.java

package com.example.employeemanager.Services;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.example.employeemanager.Entities.Department;
import com.example.employeemanager.Entities.Employee;
import com.example.employeemanager.Repositories.EmployeeRepository;
import java.util.List;
@Service
public class EmployeeService {
    @Autowired
    private final EmployeeRepository employeeRepository;
    @Autowired
    public EmployeeService(EmployeeRepository employeeRepository) {
        this.employeeRepository = employeeRepository;
    }
    ...
}

Please help me figure out what’s the issue here. I have been stuck for hours and no luck.
I have Annotated correctly, and done everything correctly.

Here's the build.gradle file even:

plugins {
    id 'java'
    id 'org.springframework.boot' version '3.3.0'
    id 'io.spring.dependency-management' version '1.1.5'
}
group = 'com.example'
version = '0.0.1-SNAPSHOT'
java {
    toolchain {
        languageVersion = JavaLanguageVersion.of(17)
    }
}
repositories {
    mavenCentral()
}
dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'javax.persistence:javax.persistence-api:2.2'
    runtimeOnly 'com.h2database:h2:2.2.224'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
}
tasks.named('test') {
    useJUnitPlatform()
}

Thank You in advance!

I tried Annotating it correctly, matching the versions and virtually everything that Chat GPT told me to.