Grails Runtime Exception

Error Details

Message:
Caused by: java.lang.NullPointerException
Class: Unknown
At Line: [-1]
Code Snippet:

Stack Trace

org.codehaus.groovy.runtime.InvokerInvocationException: java.lang.NullPointerException
at com.planetj.servlet.filter.compression.CompressingFilter.doFilter(CompressingFilter.java:222)
Caused by: java.lang.NullPointerException