When I try to use the addon:
<dependency>
<groupId>org.vaadin.addons</groupId>
<artifactId>vaadin-combobox-multiselect</artifactId>
<version>1.1.14</version>
</dependency>I got this error:
Widgetsets found from classpath:
org.vaadin.hene.popupbutton.widgetset.PopupbuttonWidgetset in file:/Users/fabioebner/.m2/repository/org/vaadin/addons/popupbutton/2.6.0/popupbutton-2.6.0.jar
org.vaadin.teemu.switchui.SwitchComponentWidgetset in file:/Users/fabioebner/.m2/repository/org/vaadin/teemu/switch/2.0.2/switch-2.0.2.jar
com.alsnightsoft.vaadin.MasketfieldWidgetset in file:/Users/fabioebner/.m2/repository/org/vaadin/addons/masketfield/1.2.0/masketfield-1.2.0.jar
org.vaadin.addons.comboboxmultiselect.WidgetSet in file:/Users/fabioebner/.m2/repository/org/vaadin/addons/vaadin-combobox-multiselect/1.1.14/vaadin-combobox-multiselect-1.1.14.jar
org.vaadin.gridutil.WidgetSet in file:/Users/fabioebner/.m2/repository/org/vaadin/addons/vaadin-grid-util/1.0.9/vaadin-grid-util-1.0.9.jar
Search took 375ms
[INFO]
5 addons found.
log4j:WARN No appenders could be found for logger (org.jboss.resteasy.plugins.providers.DocumentProvider).
log4j:WARN Please initialize the log4j system properly.
[INFO]
------------------------------------------------------------------------
[INFO]
BUILD FAILURE
[INFO]
------------------------------------------------------------------------
[INFO]
Total time: 10.402 s
Jan 18, 2017 3:55:34 PM com.vaadin.wscdn.client.Connection queryRemoteWidgetSet
SEVERE: 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.MojoExecutor.executeForkedExecutions(MojoExecutor.java:352)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:197)
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:497)
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)
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:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)