Grails Runtime Exception

Error Details

Error 500: Error processing GroovyPageView: null
Servlet: grails
URI: /grails/webSearch/index.dispatch
Exception Message: Error processing GroovyPageView: null
Caused by: Error processing GroovyPageView: null
Class: gsp_adaptiverx_webSearchindex_gsp
At Line: [552]
Code Snippet:

Stack Trace

org.codehaus.groovy.grails.web.pages.exceptions.GroovyPagesException: Error processing GroovyPageView: null

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NumberFormatException: null
at java.lang.Long.parseLong(Long.java:552)
at java.lang.Long.<init>(Long.java:965)
at gsp_adaptiverx_webSearchindex_gsp.run(gsp_adaptiverx_webSearchindex_gsp.groovy:30)
... 3 more