Important Notice - Forums is archived
To simplify things and help our users to be more productive, we have archived the current forum and focus our efforts on helping developers on Stack Overflow. You can post new questions on Stack Overflow or join our Discord channel.

Vaadin lets you build secure, UX-first PWAs entirely in Java.
Free ebook & tutorial.
Can't run Vaadin 7 (maven generated) project on tomcat 8
Hello,
When I create Vaadin 7 (maven) project (vaadin-archetype-application) using eclipse, I got an error in the pom file line 143: Plugin execution not covered by lifecycle configuration: com.vaadin:vaadin-maven-plugin:7.5.6:update-theme (execution: default, phase: generate-sources). Moreover, when I attempt to run it on server (tomcat 8), I got this error:
Dec 20, 2016 3:58:16 AM org.apache.catalina.core.ContainerBase startInternal
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/myapplication]]
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:917)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/myapplication]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
... 6 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot@5715a372]
Any suggestions/help?
The error about vaadin-maven-plugin and the Tomcat exception seem to be unrelated. The first error is Eclipse specific and is related to m2eclipse. You can get rid of the problem by using the quick fix Eclipse suggests for the problem. More about that lifecycle mapping here: http://www.eclipse.org/m2e/documentation/m2e-execution-not-covered.html
Unfortunately I don't have any insight for the Tomcat exception. What is the root exception causing Tomcat failing to start component. Can you see any other exceptions in the log earlier.