Maven build does not work for Grails 1.3.7



I am building my application with Maven and getting the error

Failed to execute goal org.grails:grails-maven-plugin:1.3.7:maven-clean (default) on project MiscTest: Unable to start Grails: java.lang.ClassNotFoundException: grails.util.BuildSettings -> [Help 1]

I have built and deploy my app using the same pom successfully 6 months back but when I am trying to build it, it is throwing me above error. I did not made any changes to build artifacts like pom, BuildConfig etc. I am wondering what could be the reason. Any help will be greatly appreciated.