Melati Error Template

An error has occured in this application.

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org.melati.template.TemplateEngineException
org.webmacro.PropertyException: Attempt to invoke method public int org.paneris.bibliomania.Chapter.totalPages() on object org.paneris.bibliomania.Chapter raised an exception: org.melati.util.UnexpectedExceptionException
org.melati.util.UnexpectedExceptionException: An exception occurred in a context where it was very unexpected:
null at /var/cache/jetty6/Jetty_0_0_0_0_8080_b.war__b__.hf633t/webapp/WEB-INF/classes/org/paneris/bibliomania/html/header.wm:36.18



org.melati.template.TemplateEngineException: org.melati.template.TemplateEngineException
org.webmacro.PropertyException: Attempt to invoke method public int org.paneris.bibliomania.Chapter.totalPages() on object org.paneris.bibliomania.Chapter raised an exception: org.melati.util.UnexpectedExceptionException
org.melati.util.UnexpectedExceptionException: An exception occurred in a context where it was very unexpected:
null at /var/cache/jetty6/Jetty_0_0_0_0_8080_b.war__b__.hf633t/webapp/WEB-INF/classes/org/paneris/bibliomania/html/header.wm:36.18
---
org.webmacro.PropertyException: Attempt to invoke method public int org.paneris.bibliomania.Chapter.totalPages() on object org.paneris.bibliomania.Chapter raised an exception: org.melati.util.UnexpectedExceptionException
org.melati.util.UnexpectedExceptionException: An exception occurred in a context where it was very unexpected:
null at /var/cache/jetty6/Jetty_0_0_0_0_8080_b.war__b__.hf633t/webapp/WEB-INF/classes/org/paneris/bibliomania/html/header.wm:36.18
	at org.webmacro.engine.PropertyOperator.invoke(PropertyOperatorCache.java:1063)
	at org.webmacro.engine.DirectAccessor.get(PropertyOperatorCache.java:1280)
	at org.webmacro.engine.PropertyOperator.getProperty(PropertyOperatorCache.java:749)
	at org.webmacro.engine.PropertyOperatorCache.getProperty(PropertyOperatorCache.java:186)
	at org.webmacro.Context.internalGet(Context.java:387)
	at org.webmacro.Context.getProperty(Context.java:447)
	at org.webmacro.engine.PropertyVariable.getValue(PropertyVariable.java:52)
	at org.webmacro.engine.Variable.write(Variable.java:215)
	at org.webmacro.engine.Block.write(Block.java:145)
	at org.webmacro.directive.IfDirective.write(IfDirective.java:216)
	at org.webmacro.engine.Block.write(Block.java:197)
	at org.webmacro.engine.WMTemplate.write(WMTemplate.java:333)
	at org.webmacro.directive.IncludeDirective.write(IncludeDirective.java:406)
	at org.webmacro.engine.Block.write(Block.java:172)
	at org.webmacro.engine.WMTemplate.write(WMTemplate.java:333)
	at org.melati.template.webmacro.WebmacroTemplate.write(WebmacroTemplate.java:86)
	at org.melati.template.webmacro.WebmacroTemplateEngine.expandTemplate(WebmacroTemplateEngine.java:179)
	at org.melati.template.webmacro.WebmacroTemplateEngine.expandTemplate(WebmacroTemplateEngine.java:162)
	at org.melati.servlet.TemplateServlet.doPoemRequest(TemplateServlet.java:138)
	at org.melati.servlet.PoemServlet$1.run(PoemServlet.java:261)
	at org.melati.poem.Database$3.run(Database.java:724)
	at org.melati.poem.PoemThread.inSession(PoemThread.java:159)
	at org.melati.poem.Database.perform(Database.java:722)
	at org.melati.poem.Database.inSession(Database.java:786)
	at org.melati.servlet.PoemServlet.doConfiguredRequest(PoemServlet.java:228)
	at org.melati.servlet.ConfigServlet.doGetPostRequest(ConfigServlet.java:177)
	at org.melati.servlet.ConfigServlet.doGet(ConfigServlet.java:148)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:363)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417)
	at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
	at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:324)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534)
	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:864)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:533)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:207)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:403)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:522)
Caused by: org.melati.util.UnexpectedExceptionException: An exception occurred in a context where it was very unexpected:
null
	at org.paneris.bibliomania.Chapter.totalPages(Chapter.java:325)
	at sun.reflect.GeneratedMethodAccessor352.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.webmacro.engine.PropertyOperator.invoke(PropertyOperatorCache.java:1029)
	... 45 more
Caused by: java.lang.NullPointerException
	at org.paneris.bibliomania.Chapter.totalPages(Chapter.java:322)
	... 49 more
-- secondary stack trace --
org.melati.util.UnexpectedExceptionException: An exception occurred in a context where it was very unexpected:
null
---
java.lang.NullPointerException
	at org.paneris.bibliomania.Chapter.totalPages(Chapter.java:322)
	at sun.reflect.GeneratedMethodAccessor352.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.webmacro.engine.PropertyOperator.invoke(PropertyOperatorCache.java:1029)
	at org.webmacro.engine.DirectAccessor.get(PropertyOperatorCache.java:1280)
	at org.webmacro.engine.PropertyOperator.getProperty(PropertyOperatorCache.java:749)
	at org.webmacro.engine.PropertyOperatorCache.getProperty(PropertyOperatorCache.java:186)
	at org.webmacro.Context.internalGet(Context.java:387)
	at org.webmacro.Context.getProperty(Context.java:447)
	at org.webmacro.engine.PropertyVariable.getValue(PropertyVariable.java:52)
	at org.webmacro.engine.Variable.write(Variable.java:215)
	at org.webmacro.engine.Block.write(Block.java:145)
	at org.webmacro.directive.IfDirective.write(IfDirective.java:216)
	at org.webmacro.engine.Block.write(Block.java:197)
	at org.webmacro.engine.WMTemplate.write(WMTemplate.java:333)
	at org.webmacro.directive.IncludeDirective.write(IncludeDirective.java:406)
	at org.webmacro.engine.Block.write(Block.java:172)
	at org.webmacro.engine.WMTemplate.write(WMTemplate.java:333)
	at org.melati.template.webmacro.WebmacroTemplate.write(WebmacroTemplate.java:86)
	at org.melati.template.webmacro.WebmacroTemplateEngine.expandTemplate(WebmacroTemplateEngine.java:179)
	at org.melati.template.webmacro.WebmacroTemplateEngine.expandTemplate(WebmacroTemplateEngine.java:162)
	at org.melati.servlet.TemplateServlet.doPoemRequest(TemplateServlet.java:138)
	at org.melati.servlet.PoemServlet$1.run(PoemServlet.java:261)
	at org.melati.poem.Database$3.run(Database.java:724)
	at org.melati.poem.PoemThread.inSession(PoemThread.java:159)
	at org.melati.poem.Database.perform(Database.java:722)
	at org.melati.poem.Database.inSession(Database.java:786)
	at org.melati.servlet.PoemServlet.doConfiguredRequest(PoemServlet.java:228)
	at org.melati.servlet.ConfigServlet.doGetPostRequest(ConfigServlet.java:177)
	at org.melati.servlet.ConfigServlet.doGet(ConfigServlet.java:148)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:363)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417)
	at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
	at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:324)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534)
	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:864)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:533)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:207)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:403)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:522)