eclipse - Getting java.lang.reflect.InvocationTargetException; nested exception is java.lang.reflect.InvocationTargetException: null -

maven not able identify testng.xml file. getting exception follows:

caused by: org.apache.maven.surefire.testset.testsetfailedexception:
suite file
d:\selenium-workspace\web-automation\src\main\resources\regressionsuite.xml
not valid file

pom.xml

<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.mycompany.automation</groupid>   <artifactid>web-automation</artifactid>   <version>0.0.1-snapshot</version>   <name>mycompany.web.automation project</name>   <description>mycompany.web.automation project</description>    <dependencies>      <dependency>     <groupid>org.apache.maven.plugins</groupid>     <artifactid>maven-resources-plugin</artifactid>     <version>2.6</version> </dependency> <!-- https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-java --> <dependency>     <groupid>org.seleniumhq.selenium</groupid>     <artifactid>selenium-java</artifactid>     <version>2.53.0</version> </dependency> <!-- https://mvnrepository.com/artifact/org.testng/testng --> <dependency>     <groupid>org.testng</groupid>     <artifactid>testng</artifactid>     <version>6.9.10</version> </dependency>  </dependencies>  <properties>        <suitexmlfile>src/main/resources/regressionsuite.xml</suitexmlfile>        <skiptests>false</skiptests>  </properties>  <build>     <plugins>           <plugin>                  <groupid>org.apache.maven.plugins</groupid>                  <artifactid>maven-surefire-plugin</artifactid>                  <version>2.12.4</version>                  <configuration>                             <suitexmlfiles>                                    <suitexmlfile>${suitexmlfile}</suitexmlfile>                             </suitexmlfiles>                  </configuration>           </plugin>     </plugins> </build>  </project> 

regression.xml

<?xml version="1.0" encoding="utf-8"?> <!doctype suite system "http://testng.org/testng-1.0.dtd"> <suite name="suite" parallel="false">   <test name="test">       <parameter name="username" value="user@example.com"></parameter>       <parameter name="password" value="password123"></parameter>     <classes>       <class name="com.test1.test.testclassone"/>     </classes>   </test> <!-- test --> </suite> <!-- suite --> 

output

t e s t s

---

org.apache.maven.surefire.util.surefirereflectionexception: java.lang.reflect.invocationtargetexception; nested exception java.lang.reflect.invocationtargetexception: null java.lang.reflect.invocationtargetexception @ sun.reflect.nativemethodaccessorimpl.invoke0(native method) @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:62) @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43) @ java.lang.reflect.method.invoke(method.java:498) @ org.apache.maven.surefire.util.reflectionutils.invokemethodwitharray(reflectionutils.java:189) @ org.apache.maven.surefire.booter.providerfactory$providerproxy.invoke(providerfactory.java:165) @ org.apache.maven.surefire.booter.providerfactory.invokeprovider(providerfactory.java:85) @ org.apache.maven.surefire.booter.forkedbooter.runsuitesinprocess(forkedbooter.java:115) @ org.apache.maven.surefire.booter.forkedbooter.main(forkedbooter.java:75) caused by: org.apache.maven.surefire.testset.testsetfailedexception: suite file d:\selenium-workspace\web-automation\src\main\resources\regressionsuite.xml not valid file @ org.apache.maven.surefire.testng.testngxmltestsuite.locatetestsets(testngxmltestsuite.java:124) @ org.apache.maven.surefire.testng.testngprovider.invoke(testngprovider.java:89) ... 9 more

results :

tests run: 0, failures: 0, errors: 0, skipped: 0