cannot install with Vaadin 8

[faurad]

after adding touchkit dependency to a vaddin 8 spring app , maven cannot download and compile widgesets:

Widgetsets found from classpath:
org.vaadin.touchkit.gwt.TouchKitWidgetSet in file:/C:/Users/Adrian/.m2/repository/org/vaadin/touchkit/touchkit/5.0.0.beta1/touchkit-
5.0.0.beta1.jar
com.vaadin.board.BoardWidgetSet in file:/C:/Users/Adrian/.m2/repository/com/vaadin/vaadin-board/1.0.0/vaadin-board-1.0.0.jar
com.vaadin.addon.charts.Widgetset in file:/C:/Users/Adrian/.m2/repository/com/vaadin/vaadin-charts/4.0.0/vaadin-charts-4.0.0.jar

Search took 2013ms
[INFO] 3 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] Widgetset config created to C:\Adrian\eventshark.workspace\eventshark\target\generated-sources\wscdn\AppWidgetset.java. Public URL: n
ull
[INFO]
[INFO] --- vaadin-maven-plugin:8.1.5:compile-theme (default) @ eventshark ---
[INFO] Updating theme VAADIN\themes\apptheme
[INFO] Theme "VAADIN\themes\apptheme" compiled
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ eventshark ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 2 resources
[INFO] Copying 10 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ eventshark ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 83 source files to C:\Adrian\eventshark.workspace\eventshark\target\classes
[INFO]
[INFO] --- vaadin-maven-plugin:8.1.5:compile (default) @ eventshark ---

---

Vaadin Charts 4 registered to [email protected] (Pro Tools subscription)

---

Vaadin Board 1 registered to [email protected] (Pro Tools subscription)

Widgetsets found from classpath:
org.vaadin.touchkit.gwt.TouchKitWidgetSet in file:/C:/Users/Adrian/.m2/repository/org/vaadin/touchkit/touchkit/5.0.0.beta1/touchkit-
5.0.0.beta1.jar
com.vaadin.board.BoardWidgetSet in file:/C:/Users/Adrian/.m2/repository/com/vaadin/vaadin-board/1.0.0/vaadin-board-1.0.0.jar
com.vaadin.addon.charts.Widgetset in file:/C:/Users/Adrian/.m2/repository/com/vaadin/vaadin-charts/4.0.0/vaadin-charts-4.0.0.jar

Search took 375ms
[INFO] 3 addons found.
[INFO] Fetching widgetset from CDN
[WARNING] Retrying widgetset download - the server might be busy, please wait a moment
[WARNING] Retrying widgetset download - the server might be busy, please wait a moment
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 04:26 min
[INFO] Finished at: 2017-10-30T13:46:44-04:00
[INFO] Final Memory: 45M/369M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.vaadin:vaadin-maven-plugin:8.1.5:compile (default) on project eventshark: Failed to download widgetset fr
om CDN: NullPointerException -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

[mstahv]

It looks like there has been some issue with the CDN service. Does it still happen? Could you try with "local" setting for widgetset mode?