Upgrade issue (installer) 7.0.2 -> 7.12.2

[George]

We are trying to upgrade our Confluence v7.0.2 to the latest (v7.12.2 at the time of writing). When running the installer, the following error is produced:

In action "Update JVM Options when upgrading JDK 8 to JDK 11 [Run script]" (screen "Upgrade Actions [Form]"), property "Script":
java.lang.NullPointerException
 at java.base/java.util.Objects.requireNonNull(Unknown Source)
at java.base/java.util.Arrays$ArrayList.<init>(Unknown Source)
at java.base/java.util.Arrays.asList(Unknown Source)
at com.install4j.script.I4jScript_Internal_257.eval(I4jScript_Internal_257.java:14)
at com.install4j.script.I4jScript_Internal_257.evaluate(I4jScript_Internal_257.java:*58)
at com.install4j.runtime.installer.helper.Script.evaluate(Script.java:33)
at com.install4j.runtime.installer.ContextImpl.runScript(ContextImpl.java:202)
at com.install4j.runtime.installer.ContextImpl.runScript(ContextImpl.java:196)
at com.install4j.runtime.beans.actions.control.RunScriptAction.execute(RunScriptAction.java:34)
at com.install4j.runtime.beans.actions.SystemInstallOrUninstallAction.install(SystemInstallOrUninstallAction.java:29)
at com.install4j.runtime.installer.ContextImpl$9.executeAction(ContextImpl.java:1731)
at com.install4j.runtime.installer.ContextImpl$9.fetchValue(ContextImpl.java:1722)
at com.install4j.runtime.installer.ContextImpl$9.fetchValue(ContextImpl.java:1719)
at com.install4j.runtime.installer.helper.comm.actions.FetchObjectAction.execute(FetchObjectAction.java:14)
at com.install4j.runtime.installer.helper.comm.HelperCommunication.executeActionDirect(HelperCommunication.java:271)
at com.install4j.runtime.installer.helper.comm.HelperCommunication.executeActionInt(HelperCommunication.java:256)
at com.install4j.runtime.installer.helper.comm.HelperCommunication.executeActionChecked(HelperCommunication.java:184)
at com.install4j.runtime.installer.helper.comm.HelperCommunication.fetchObjectChecked(HelperCommunication.java:167)
at com.install4j.runtime.installer.ContextImpl.performActionIntStatic(ContextImpl.java:1719)
at com.install4j.runtime.installer.InstallerContextImpl.performActionInt(InstallerContextImpl.java:159)
at com.install4j.runtime.installer.ContextImpl.performAction(ContextImpl.java:1147)
at com.install4j.runtime.installer.controller.Controller.executeAction(Controller.java:389)
at com.install4j.runtime.installer.controller.Controller.executeActions(Controller.java:355)
at com.install4j.runtime.installer.controller.Controller.handleCommand(Controller.java:212)
at com.install4j.runtime.installer.controller.Controller.start(Controller.java:111)
at com.install4j.runtime.installer.Installer.runInProcess(Installer.java:57)
at com.install4j.runtime.installer.Installer.main(Installer.java:45)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:85)
at com.exe4j.runtime.WinLauncher.main(WinLauncher.java:94)
at com.install4j.runtime.launcher.WinLauncher.main(WinLauncher.java:25)

We tried 3 different versions of the installer - 7.4.9, 7.6.3 and 7.12.2 - all with the same outcome.

We can't utilise the .zip file installation as we use Confluence as a Windows service, so we have to use the installer.

So, how do we get around this problem or shall we just ignore the error and proceed with the installation/upgrade regardless? Thanks.

[Brant Schroeder]

@George I would suggest upgrading confluence to use Java version 11 and seeing if that resolves the issue.