Export/import content pack

Graylog Central (peer support)
1

Hi guys. I’m trying to export Dashboards as content pack and then to import that content pack in another Graylog instance.
The source is Graylog version 3.1.4+1149fe1 , Debian OS, installed from repository.
One destination I’m trying to import content pack without success is Graylog 4.0.1 virtual appliance.
Another destination is Graylog 3.2.4+a407287 ,Debian OS, installed from repository - again without luck.

The error in /var/log/graylog-server/server.log when I hit Install button is :

2020-12-22T15:03:22.527Z ERROR [AnyExceptionClassMapper] Unhandled exception in REST resource
org.graylog2.contentpacks.exceptions.ContentPackException: Could not find key trend in config.
        at org.graylog2.contentpacks.model.entities.WidgetConfig.getBoolean(WidgetConfig.java:57) ~[graylog.jar:?]
        at org.graylog2.contentpacks.facades.dashboardV1.DashboardWidgetConverter.createSearchResultCount(DashboardWidgetConverter.java:298) ~[graylog.jar:?]
        at org.graylog2.contentpacks.facades.dashboardV1.DashboardWidgetConverter.convert(DashboardWidgetConverter.java:81) ~[graylog.jar:?]
        at org.graylog2.contentpacks.facades.dashboardV1.EntityConverter.convertWidgets(EntityConverter.java:106) ~[graylog.jar:?]
        at org.graylog2.contentpacks.facades.dashboardV1.EntityConverter.convert(EntityConverter.java:66) ~[graylog.jar:?]
        at org.graylog2.contentpacks.facades.dashboardV1.DashboardV1Facade.resolveEntityV1(DashboardV1Facade.java:114) ~[graylog.jar:?]
        at org.graylog2.contentpacks.facades.dashboardV1.DashboardV1Facade.resolveForInstallation(DashboardV1Facade.java:105) ~[graylog.jar:?]
        at org.graylog2.contentpacks.ContentPackService.buildEntityGraph(ContentPackService.java:391) ~[graylog.jar:?]
        at org.graylog2.contentpacks.ContentPackService.installContentPack(ContentPackService.java:113) ~[graylog.jar:?]
        at org.graylog2.contentpacks.ContentPackService.installContentPack(ContentPackService.java:99) ~[graylog.jar:?]
        at org.graylog2.rest.resources.system.contentpacks.ContentPackResource.installContentPack(ContentPackResource.java:293) ~[graylog.jar:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_275]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_275]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_275]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_275]
        at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52) ~[graylog.jar:?]
        at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:124) ~[graylog.jar:?]
        at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:167) ~[graylog.jar:?]
        at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:219) ~[graylog.jar:?]
        at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:79) ~[graylog.jar:?]
        at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:469) ~[graylog.jar:?]
        at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:391) ~[graylog.jar:?]
        at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:80) ~[graylog.jar:?]
        at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:253) [graylog.jar:?]
        at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248) [graylog.jar:?]
        at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244) [graylog.jar:?]
        at org.glassfish.jersey.internal.Errors.process(Errors.java:292) [graylog.jar:?]
        at org.glassfish.jersey.internal.Errors.process(Errors.java:274) [graylog.jar:?]
        at org.glassfish.jersey.internal.Errors.process(Errors.java:244) [graylog.jar:?]
        at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265) [graylog.jar:?]
        at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:232) [graylog.jar:?]
        at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:680) [graylog.jar:?]
        at org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpContainer.service(GrizzlyHttpContainer.java:356) [graylog.jar:?]
        at org.glassfish.grizzly.http.server.HttpHandler$1.run(HttpHandler.java:200) [graylog.jar:?]
        at com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180) [graylog.jar:?]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_275]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_275]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_275]

Any advice ?

2

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