ClassNotFoundException PaintTarget

Vaadin 6 / 7 / 8
1

I’m trying to migrate to Vaadin 7 but I get the following exception, when trying to add canvas to a layout

java.lang.NoClassDefFoundError: com/vaadin/terminal/PaintTarget
	at java.lang.Class.getDeclaredMethods0(Native Method)
	at java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
	at java.lang.Class.getDeclaredMethod(Class.java:1935)
	at com.vaadin.server.AbstractClientConnector.findStateType(AbstractClientConnector.java:282)
	at com.vaadin.server.AbstractClientConnector.getStateType(AbstractClientConnector.java:271)
	at com.vaadin.server.AbstractClientConnector.createState(AbstractClientConnector.java:258)
	at com.vaadin.server.AbstractClientConnector.getState(AbstractClientConnector.java:222)
	at com.vaadin.server.AbstractClientConnector.getState(AbstractClientConnector.java:207)
	at com.vaadin.ui.AbstractComponent.getState(AbstractComponent.java:621)
	at com.vaadin.ui.AbstractComponent.beforeClientResponse(AbstractComponent.java:634)
	at com.vaadin.server.AbstractCommunicationManager.writeUidlResponse(AbstractCommunicationManager.java:801)
	at com.vaadin.server.AbstractCommunicationManager.paintAfterVariableChanges(AbstractCommunicationManager.java:728)
	at com.vaadin.server.AbstractCommunicationManager.handleUidlRequest(AbstractCommunicationManager.java:599)
	at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:315)
	at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:201)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1812)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.ClassNotFoundException: com.vaadin.terminal.PaintTarget
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1711)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556)
	... 32 more

Also after getting CustomField already has a parent exception, I get the following StackOverflowError

java.lang.StackOverflowError
	at org.apache.juli.ClassLoaderLogManager.getLogger(ClassLoaderLogManager.java:223)
	at java.util.logging.LogManager.demandLogger(LogManager.java:389)
	at java.util.logging.Logger.getLogger(Logger.java:288)
	at com.vaadin.ui.ConnectorTracker.getLogger(ConnectorTracker.java:89)
	at com.vaadin.ui.ConnectorTracker.markDirty(ConnectorTracker.java:336)
	at com.vaadin.server.AbstractClientConnector.markAsDirty(AbstractClientConnector.java:139)
	at com.vaadin.server.AbstractClientConnector.markAsDirtyRecursive(AbstractClientConnector.java:474)
	at com.vaadin.server.AbstractClientConnector.markAsDirtyRecursive(AbstractClientConnector.java:477)
	at com.vaadin.server.AbstractClientConnector.markAsDirtyRecursive(AbstractClientConnector.java:477)
	at com.vaadin.server.AbstractClientConnector.markAsDirtyRecursive(AbstractClientConnector.java:477)
	at com.vaadin.server.AbstractClientConnector.markAsDirtyRecursive(AbstractClientConnector.java:477)
	
        [....1000 more lines of this]
2

Vaadin 7 canvas widget add-on is located at the github