Widgetset - CDN

Hi,

i have been using the widgetset cdn for a while now and everything just worked until i recently tried to add a new addon (Vaadin Charts). Now i only get some error:

Apr 05, 2017 11:00:40 AM com.vaadin.wscdn.client.Connection queryRemoteWidgetSet
SCHWERWIEGEND: Failed to connect service https://wsc.vaadin.com/api/compiler/compile
javax.ws.rs.InternalServerErrorException: HTTP 500 Internal Server Error
    at org.jboss.resteasy.client.jaxrs.internal.ClientInvocation.handleErrorStatus(ClientInvocation.java:189)
    at org.jboss.resteasy.client.jaxrs.internal.ClientInvocation.extractResult(ClientInvocation.java:154)
    at org.jboss.resteasy.client.jaxrs.internal.ClientInvocation.invoke(ClientInvocation.java:444)
    at org.jboss.resteasy.client.jaxrs.internal.ClientInvocationBuilder.post(ClientInvocationBuilder.java:201)
    at com.vaadin.wscdn.client.Connection.queryRemoteWidgetSet(Connection.java:69)
    at com.vaadin.integration.maven.UpdateWidgetsetMojo.triggerCdnBuild(UpdateWidgetsetMojo.java:168)
    at com.vaadin.integration.maven.UpdateWidgetsetMojo.doExecute(UpdateWidgetsetMojo.java:86)
    at org.codehaus.mojo.gwt.shell.AbstractGwtShellMojo.execute(AbstractGwtShellMojo.java:182)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
    at org.codehaus.classworlds.Launcher.main(Launcher.java:47

Those addons are being used:

Widgetsets found from classpath:
    org.vaadin.risto.stepper.widgetset.StepperWidgetset in file:/C:/Users/MJobst/.m2/repository/org/vaadin/addons/stepper/2.3.0/stepper-2.3.0.jar
    com.wcs.wcslib.vaadin.widget.multifileupload.WidgetSet in file:/C:/Users/MJobst/.m2/repository/com/wcs/wcslib/wcslib-vaadin-widget-multifileupload/2.0.3/wcslib-vaadin-widget-multifileupload-2.0.3.jar
    fi.jasoft.qrcode.QrcodeWidgetset in file:/C:/Users/MJobst/.m2/repository/org/vaadin/addons/qrcode/2.0.1/qrcode-2.0.1.jar
    org.vaadin.hene.flexibleoptiongroup.widgetset.FlexibleOptionGroupWidgetset in file:/C:/Users/MJobst/.m2/repository/org/vaadin/addons/flexibleoptiongroup/2.3.0/flexibleoptiongroup-2.3.0.jar
    com.vaadin.addon.charts.Widgetset in file:/C:/Users/MJobst/.m2/repository/com/vaadin/addon/vaadin-charts/3.2.0/vaadin-charts-3.2.0.jar

If i remove ANY of them widgetset compilation works just fine.
Also removing any addon and adding some random addon seems to work sometimes.

Compiling the same widgetset (with all 5 addons) in local mode works fine.

I guess there is some kind of bug on the wsc servers?

Old topic already... but sounds like a bug in service and looks like it does not even try to compile the widgetset, but fails already before it gets that far.