org.xml.sax.SAXParseException:cvc-elt.1: Cannot find the declaration of element 'configuration'

[ramu somu]

<?xml version="1.0" encoding="ISO-8859-1" ?>

<configuration>

  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <layout class="ch.qos.logback.classic.PatternLayout">
      <Pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</Pattern>
    </layout>
  </appender>
  
  <logger name="com.base22" level="TRACE"/>
  

  <root level="debug">
    <appender-ref ref="STDOUT" />
  </root>
</configuration>

<configuration> tag is not identified. Can you please let me know on what else to add. I am using maven