grails 2.4 + this plugin

[ibmsoft]

getOutputStream() has already been called for this response. Stacktrace follows:
Message: Error processing GroovyPageView: getOutputStream() has already been called for this response
Line | Method
->> 636 | createGroovyPageException in /grails/project/ycpx/grails-app/views/error.gsp

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Caused by IllegalStateException: getOutputStream() has already been called for this response

[dbpatel219]

Ditto having the same issue with Grails 2.4.3