Spring Boot wont start Tomcat - spring-boot

Question

I am new in spring boot framework. I tried a simple scratch application but my embedded tomcat wont startup. Also i downloaded source code from spring boot initialize, same application is running smoothly in another system but giving error in my system.
My pom.xml file
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.sokka</groupId>
<artifactId>Sokka</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>Sokka</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-
8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
My Java File
package com.sokka.Sokka;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class SokkaApplication {
public static void main(String[] args) {
SpringApplication.run(SokkaApplication.class, args);
}
}
The same Application is running in another system but not running in my system.
The error message that I get is:
018-04-20 11:42:22.969 INFO 31454 --- [ restartedMain] com.sokka.Sokka.SokkaApplication : Starting SokkaApplication on hero-HP-Pavilion-Notebook with PID 31454 (/home/hero/Projects/Sokka/target/classes started by hero in /home/hero/Projects/Sokka)
2018-04-20 11:42:22.970 INFO 31454 --- [ restartedMain] com.sokka.Sokka.SokkaApplication : No active profile set, falling back to default profiles: default
2018-04-20 11:42:23.015 INFO 31454 --- [ restartedMain] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext#530af565: startup date [Fri Apr 20 11:42:23 NPT 2018]; root of context hierarchy
2018-04-20 11:42:23.939 INFO 31454 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2018-04-20 11:42:23.962 INFO 31454 --- [ restartedMain] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2018-04-20 11:42:23.975 INFO 31454 --- [ restartedMain] com.sokka.Sokka.SokkaApplication : Started SokkaApplication in 1.239 seconds (JVM running for 1.618)
2018-04-20 11:42:23.980 INFO 31454 --- [ Thread-8] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext#530af565: startup date [Fri Apr 20 11:42:23 NPT 2018]; root of context hierarchy
2018-04-20 11:42:23.986 INFO 31454 --- [ Thread-8] o.s.j.e.a.AnnotationMBeanExporter : Unregistering JMX-exposed beans on shutdown