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Cannot set the width property to invalid value: null
java.lang.Exception: Cannot set the width property to invalid value: null	at com.gargoylesoftware.htmlunit.javascript.host.html.HTMLElement.setWidthOrHeight(HTMLElement.java:2260)	at com.gargoylesoftware.htmlunit.javascript.host.html.HTMLTableColElement.jsxSet_width(HTMLTableColElement.java:89)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at net.sourceforge.htmlunit.corejs.javascript.MemberBox.invoke(MemberBox.java:161)	at net.sourceforge.htmlunit.corejs.javascript.ScriptableObject.putImpl(ScriptableObject.java:2354)	at net.sourceforge.htmlunit.corejs.javascript.ScriptableObject.put(ScriptableObject.java:350)	at net.sourceforge.htmlunit.corejs.javascript.ScriptableObject.putProperty(ScriptableObject.java:1965)	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.setObjectProp(ScriptRuntime.java:1558)	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.setObjectProp(ScriptRuntime.java:1548)	at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpretLoop(Interpreter.java:1394)	at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpret(Interpreter.java:845)	at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.call(InterpretedFunction.java:164)	at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.doTopCall(ContextFactory.java:427)	at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.doTopCall(HtmlUnitContextFactory.java:263)	at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3058)	at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.exec(InterpretedFunction.java:175)	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$5.doRun(JavaScriptEngine.java:415)	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:520)	at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:529)	at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:536)	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.execute(JavaScriptEngine.java:424)	at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.execute(JavaScriptEngine.java:399)	at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptIfPossible(HtmlPage.java:899)	at com.gargoylesoftware.htmlunit.html.HtmlScript.executeInlineScriptIfNeeded(HtmlScript.java:309)	at com.gargoylesoftware.htmlunit.html.HtmlScript.executeScriptIfNeeded(HtmlScript.java:364)	at com.gargoylesoftware.htmlunit.html.HtmlScript$1.execute(HtmlScript.java:213)	at com.gargoylesoftware.htmlunit.html.HtmlScript.onAllChildrenAddedToPage(HtmlScript.java:238)	at com.gargoylesoftware.htmlunit.html.HTMLParser$HtmlUnitDOMBuilder.endElement(HTMLParser.java:690)	at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)	at com.gargoylesoftware.htmlunit.html.HTMLParser$HtmlUnitDOMBuilder.endElement(HTMLParser.java:648)	at org.cyberneko.html.HTMLTagBalancer.callEndElement(HTMLTagBalancer.java:1132)	at org.cyberneko.html.HTMLTagBalancer.endElement(HTMLTagBalancer.java:1034)	at org.cyberneko.html.filters.DefaultFilter.endElement(DefaultFilter.java:206)	at org.cyberneko.html.filters.NamespaceBinder.endElement(NamespaceBinder.java:329)	at org.cyberneko.html.HTMLScanner$ContentScanner.scanEndElement(HTMLScanner.java:3058)	at org.cyberneko.html.HTMLScanner$ContentScanner.scan(HTMLScanner.java:1994)	at org.cyberneko.html.HTMLScanner.scanDocument(HTMLScanner.java:907)	at org.cyberneko.html.HTMLConfiguration.parse(HTMLConfiguration.java:499)	at org.cyberneko.html.HTMLConfiguration.parse(HTMLConfiguration.java:452)	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)	at com.gargoylesoftware.htmlunit.html.HTMLParser$HtmlUnitDOMBuilder.parse(HTMLParser.java:892)	at com.gargoylesoftware.htmlunit.html.HTMLParser.parse(HTMLParser.java:350)	at com.gargoylesoftware.htmlunit.html.HTMLParser.parseHtml(HTMLParser.java:304)	at com.gargoylesoftware.htmlunit.DefaultPageCreator.createHtmlPage(DefaultPageCreator.java:134)	at com.gargoylesoftware.htmlunit.DefaultPageCreator.createPage(DefaultPageCreator.java:101)	at com.gargoylesoftware.htmlunit.WebClient.loadWebResponseInto(WebClient.java:447)	at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:330)	at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:387)	at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:372)	at org.jboss.jsfunit.framework.SimpleInitialRequestStrategy.doInitialRequest(SimpleInitialRequestStrategy.java:48)	at org.jboss.jsfunit.framework.WebClientSpec.doInitialRequest(WebClientSpec.java:259)	at org.jboss.jsfunit.jsfsession.JSFSession.init(JSFSession.java:81)	at org.jboss.jsfunit.jsfsession.JSFSession.init(JSFSession.java:58)	at integration.jsfunit.NavigationTest.testMainMenuNavigationCustomers(NavigationTest.java:29)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at junit.framework.TestCase.runTest(TestCase.java:154)	at junit.framework.TestCase.runBare(TestCase.java:127)	at org.apache.cactus.internal.AbstractCactusTestCase.runBareServer(AbstractCactusTestCase.java:153)	at org.apache.cactus.internal.server.AbstractWebTestCaller.doTest(AbstractWebTestCaller.java:119)	at org.apache.cactus.internal.server.AbstractWebTestController.handleRequest_aroundBody0(AbstractWebTestController.java:93)	at org.apache.cactus.internal.server.AbstractWebTestController.handleRequest_aroundBody1$advice(AbstractWebTestController.java:217)	at org.apache.cactus.internal.server.AbstractWebTestController.handleRequest(AbstractWebTestController.java)	at org.apache.cactus.server.ServletTestRedirector.doPost_aroundBody2(ServletTestRedirector.java:101)	at org.apache.cactus.server.ServletTestRedirector.doPost_aroundBody3$advice(ServletTestRedirector.java:217)	at org.apache.cactus.server.ServletTestRedirector.doPost(ServletTestRedirector.java)	at org.jboss.jsfunit.framework.JSFUnitServletRedirector.doPost(JSFUnitServletRedirector.java:46)	at org.apache.cactus.server.ServletTestRedirector.doGet_aroundBody0(ServletTestRedirector.java:72)	at org.apache.cactus.server.ServletTestRedirector.doGet_aroundBody1$advice(ServletTestRedirector.java:217)	at org.apache.cactus.server.ServletTestRedirector.doGet(ServletTestRedirector.java)	at org.jboss.jsfunit.framework.JSFUnitServletRedirector.doGet(JSFUnitServletRedirector.java:52)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.jboss.jsfunit.framework.JSFUnitFilter.doFilter(JSFUnitFilter.java:119)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)	at java.lang.Thread.run(Thread.java:619)