org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getElementsRoute' in class com.digibis.commons.web.webmap.WebPosition threw exception class java.util.ConcurrentModificationException : null at org.apache.velocity.runtime.parser.node.PropertyExecutor.execute(PropertyExecutor.java:188) at org.apache.velocity.runtime.parser.node.ASTIdentifier.execute(ASTIdentifier.java:226) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:207) at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:357) at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:135) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:109) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:271) at org.apache.velocity.runtime.directive.Parse.render(Parse.java:232) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:153) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:109) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:271) at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:128) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:271) at org.apache.velocity.runtime.directive.Parse.render(Parse.java:232) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:153) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:271) at org.apache.velocity.Template.merge(Template.java:296) at com.digibis.commons.templates.VelocityProcessor.processVelocity(VelocityProcessor.java:111) at com.digibis.commons.web.commands.VelocityProcessing.writeInResponse(VelocityProcessing.java:108) at com.digibis.commons.web.commands.VelocityProcessing.run(VelocityProcessing.java:81) at com.digibis.commons.web.commands.SequentialProcessing.run(SequentialProcessing.java:35) at com.digibis.commons.web.commands.RunCommand.run(RunCommand.java:79) at com.digibis.commons.web.commands.SequentialProcessing.run(SequentialProcessing.java:35) at com.digibis.commons.web.commands.RunCommand.run(RunCommand.java:79) at com.digibis.commons.web.commands.SequentialProcessing.run(SequentialProcessing.java:35) at com.digibis.commons.web.commands.RunCommand.run(RunCommand.java:79) at com.digibis.commons.web.commands.SequentialProcessing.run(SequentialProcessing.java:35) at com.digibis.commons.web.commands.RunCommand.run(RunCommand.java:79) at com.digibis.commons.web.commands.SequentialProcessing.run(SequentialProcessing.java:35) at com.digibis.commons.web.commands.RunCommand.run(RunCommand.java:79) at com.digibis.commons.web.commands.SequentialProcessing.run(SequentialProcessing.java:35) at com.digibis.commons.web.commands.RunCommand.run(RunCommand.java:79) at com.digibis.commons.web.commands.SequentialProcessing.run(SequentialProcessing.java:35) at com.digibis.commons.web.commands.RunCommand.run(RunCommand.java:79) at com.digibis.commons.web.commands.SequentialProcessing.run(SequentialProcessing.java:35) at com.digibis.commons.web.commands.RunCommand.run(RunCommand.java:79) at com.digibis.commons.web.commands.SequentialProcessing.run(SequentialProcessing.java:35) at com.digibis.commons.web.ServletController.dispatchCommand(ServletController.java:249) at com.digibis.commons.web.ServletController.doGet(ServletController.java:753) at javax.servlet.http.HttpServlet.service(HttpServlet.java:626) at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.github.ziplet.filter.compression.CompressingFilter.doFilter(CompressingFilter.java:263) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:544) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:698) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:353) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:616) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:831) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1629) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Unknown Source)