Unable to create a new ticket in one project

It seems this issue happens with some Java distributions (I searched over the internet) while I cannot reproduce on my side. I am investigating, could you share what java version you are using, OS. Thanks!

[oracle~]$ java -version

java version "1.7.0_71"

Java(TM) SE Runtime Environment (build 1.7.0_71-b14)

Java HotSpot(TM) 64-Bit Server VM (build 24.71-b01, mixed mode)

You should run MyCollab with at least Java 1.8, because we compiled the source to Java 1.8. So running in 1.7 will cause a lot of error or not running at all.

ok .. Let me restart the mycollab server after setup the java 1.8 version. and will update you .

thanks! I am waiting your feedback

Am still facing the same issue even if we use Java 1.8 version.

when ever I click on the new ticket on particular project , then I get error msg as shown in below :

An unexpected error has occurred. We apologize for the inconvenience. Our team has been notified and will investigate the issue right away. To provide us with the best chance of fixing this problem, please select Yes to add the detail description that includes the steps required to reproduce the problem

Could you give me the detail message in the error log, it should be in MyCollab home folder, has the mycollab.out in the logs sub folder. Thanks

below is the error logs from mycollab.out file. :

07:14:20,040 INFO c.m.w.DesktopApplication:313 - Get billing account successfully - Pricing: 0.0, User: nanda.kumar@smartstream-stp.com - Nanda Kumar
07:14:35,767 ERROR c.m.w.DesktopApplication:265 - Error
com.vaadin.server.ServerRpcManager$RpcInvocationException: Unable to invoke method click in com.vaadin.shared.ui.button.ButtonServerRpc
at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:162)
at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:119)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:435)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:407)
at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:273)
at com.vaadin.server.communication.PushHandler$2.run(PushHandler.java:148)
at com.vaadin.server.communication.PushHandler.callWithUi(PushHandler.java:240)
at com.vaadin.server.communication.PushHandler.onMessage(PushHandler.java:494)
at com.vaadin.server.communication.PushAtmosphereHandler.onMessage(PushAtmosphereHandler.java:87)
at com.vaadin.server.communication.PushAtmosphereHandler.onRequest(PushAtmosphereHandler.java:77)
at org.atmosphere.cpr.AsynchronousProcessor.action(AsynchronousProcessor.java:199)
at org.atmosphere.cpr.AsynchronousProcessor.suspended(AsynchronousProcessor.java:107)
at org.atmosphere.container.Jetty9AsyncSupportWithWebSocket.service(Jetty9AsyncSupportWithWebSocket.java:180)
at org.atmosphere.cpr.AtmosphereFramework.doCometSupport(AtmosphereFramework.java:2075)
at org.atmosphere.websocket.DefaultWebSocketProcessor.dispatch(DefaultWebSocketProcessor.java:571)
at org.atmosphere.websocket.DefaultWebSocketProcessor$3.run(DefaultWebSocketProcessor.java:333)
at org.atmosphere.util.VoidExecutorService.execute(VoidExecutorService.java:101)
at org.atmosphere.websocket.DefaultWebSocketProcessor.dispatch(DefaultWebSocketProcessor.java:328)
at org.atmosphere.websocket.DefaultWebSocketProcessor.invokeWebSocketProtocol(DefaultWebSocketProcessor.java:425)
at org.atmosphere.container.Jetty9WebSocketHandler.onWebSocketText(Jetty9WebSocketHandler.java:125)
at org.eclipse.jetty.websocket.common.events.JettyListenerEventDriver.onTextMessage(JettyListenerEventDriver.java:189)
at org.eclipse.jetty.websocket.common.message.SimpleTextMessage.messageComplete(SimpleTextMessage.java:69)
at org.eclipse.jetty.websocket.common.events.AbstractEventDriver.appendMessage(AbstractEventDriver.java:66)
at org.eclipse.jetty.websocket.common.events.JettyListenerEventDriver.onTextFrame(JettyListenerEventDriver.java:158)
at org.eclipse.jetty.websocket.common.events.AbstractEventDriver.incomingFrame(AbstractEventDriver.java:162)
at org.eclipse.jetty.websocket.common.WebSocketSession.incomingFrame(WebSocketSession.java:376)
at org.eclipse.jetty.websocket.common.extensions.ExtensionStack.incomingFrame(ExtensionStack.java:220)
at org.eclipse.jetty.websocket.common.Parser.notifyFrame(Parser.java:220)
at org.eclipse.jetty.websocket.common.Parser.parse(Parser.java:256)
at org.eclipse.jetty.websocket.common.io.AbstractWebSocketConnection.readParse(AbstractWebSocketConnection.java:679)
at org.eclipse.jetty.websocket.common.io.AbstractWebSocketConnection.onFillable(AbstractWebSocketConnection.java:511)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.reflect.InvocationTargetException: null
at sun.reflect.GeneratedMethodAccessor305.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:158)
... 39 common frames omitted
Caused by: com.vaadin.event.ListenerMethod$MethodException: Invocation of method buttonClick in com.mycollab.module.project.view.ticket.TicketDashboardViewImpl$$Lambda$105/1791063734 failed.
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:533)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:200)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:163)
at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1015)
at com.vaadin.ui.Button.fireClick(Button.java:377)
at org.vaadin.viritin.button.MButton.fireClick(MButton.java:148)
at com.vaadin.ui.Button$1.click(Button.java:54)
... 43 common frames omitted
Caused by: java.lang.IllegalArgumentException: Comparison method violates its general contract!
at java.util.TimSort.mergeLo(TimSort.java:777)
at java.util.TimSort.mergeAt(TimSort.java:514)
at java.util.TimSort.mergeCollapse(TimSort.java:441)
at java.util.TimSort.sort(TimSort.java:245)
at java.util.Arrays.sort(Arrays.java:1512)
at java.util.ArrayList.sort(ArrayList.java:1454)
at java.util.Collections.sort(Collections.java:175)
at com.mycollab.module.project.view.milestone.MilestoneComboBox.(MilestoneComboBox.java:56)
at com.mycollab.module.project.view.task.TaskEditFormFieldFactory.onCreateField(TaskEditFormFieldFactory.java:83)
at com.mycollab.vaadin.ui.AbstractBeanFieldGroupFieldFactory.setBean(AbstractBeanFieldGroupFieldFactory.java:116)
at com.mycollab.vaadin.ui.GenericBeanForm.setBean(GenericBeanForm.java:86)
at com.mycollab.module.project.view.task.TaskEditForm.setBean(TaskEditForm.java:63)
at com.mycollab.community.module.project.view.service.TicketComponentFactoryImpl$NewTicketWindow.doChange(TicketComponentFactoryImpl.java:228)
at com.mycollab.community.module.project.view.service.TicketComponentFactoryImpl$NewTicketWindow.(TicketComponentFactoryImpl.java:209)
at com.mycollab.community.module.project.view.service.TicketComponentFactoryImpl.createNewTicketWindow(TicketComponentFactoryImpl.java:164)
at com.mycollab.module.project.view.ticket.TicketDashboardViewImpl.lambda$new$98de2968$1(TicketDashboardViewImpl.java:172)
at sun.reflect.GeneratedMethodAccessor306.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
... 49 common frames omitted

Could you download the MyCollab update fix https://github.com/MyCollab/mycollab/releases/download/Release_6.0.0/MyCollab-All-6.0.0.zip

such issue happens in several JRE versions. I hope this fix though I can not reproduce at our end but from Google

if it is a JRE version issue then I should get issue with all the projects. But I am facing issue with one Project Only ?

can I know the steps how to install the MyCollab Update fix ?

You just install Mycollab as the installation instruction https://community.mycollab.com/docs/hosting-mycollab-on-your-own-server/installing-mycollab/. In case, you already use MyCollab and upgrade to the higher version, you just configure MyCollab use the existing database, it should works!