When I try to open/preview a page, it gives me the following error :description The server encountered an internal error () that prevented it from fulfilling this request.exceptionjavax.servlet.ServletException: Filter execution threw an exception org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)root causejava.lang.StackOverflowError java.text.DateFormat.format(DateFormat.java:316) org.apache.log4j.helpers.PatternParser$DatePatternConverter.convert(PatternParser.java:444) org.apache.log4j.helpers.PatternConverter.format(PatternConverter.java:64) org.apache.log4j.PatternLayout.format(PatternLayout.java:503) org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:301) org.apache.log4j.DailyRollingFileAppender.subAppend(DailyRollingFileAppender.java:358) org.apache.log4j.WriterAppender.append(WriterAppender.java:159) org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:230) org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:65) org.apache.log4j.Category.callAppenders(Category.java:203)and so on................I am getting such errors only for some pages. I am having a doubt regarding SPAR. Please reply asap.