Attribute "xmlns" must be declared for element type "beans"

I am new to the spring framework. I am trying out a tutorial that uses the spring @Async annotation.I am receiving this error Line 9 in XML document from class path resource [spring.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 9; columnNumber: 109; Attribute "xmlns" must be declared for element type "beans". I want to know why this error is happening and how can it be resolved? My spring.xml file is below ** ``` <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd"> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:task="http://www.springframework.org/schema/task" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd"> <context:component-scan base-package="cs"/> <bean id="regularService" class="cs.RegularService"> </bean> <task:annotation-driven/> </beans> ``` ** RegularService.java ``` package cs; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import cs.MailUtility; @Service public class RegularService { @Autowired private MailUtility mailUtility ; public void registerUser(String userName){ System.out.println(" User registration for "+userName +" complete"); mailUtility.sendMail(userName); System.out.println(" Registration Complete. Mail will be send after 5 seconds "); } } ``` MailUtility.java ``` package cs; import org.springframework.scheduling.annotation.Async; import org.springframework.stereotype.Component; @Component public class MailUtility { @Async public void sendMail(String name){ System.out.println(" I Will be formatting html mail and sending it "); try { Thread.sleep(5000); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println(" Asynchronous method call of send email — Complete "); } } ``` TestService.java ``` package cs; import org.springframework.context.support.ClassPathXmlApplicationContext; import cs.RegularService; public class TestService { public static void main(String args[]){ ClassPathXmlApplicationContext appContext = new ClassPathXmlApplicationContext(new String[] {"spring.xml"}); RegularService regService = (RegularService) appContext.getBean("regularService"); regService.registerUser("Skill-Guru"); } } ```