java.lang.NoClassDefFoundError: com/vaadin/ui/Window - Error debugging wi

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Hi,

starting a vaadin 14 application with jetty + jrebel i receive this strange error

i’m quite sure that i have no vaadin 8 dependency, can anyone help ?

Thanks

java.lang.NoClassDefFoundError: com/vaadin/ui/Window
	at java.lang.ClassLoader.defineClass1(ClassLoader.java)
	at java.lang.ClassLoader._jr$defineClass(ClassLoader.java:760)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:42016)
	at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.__invoke(DelegatingMethodAccessorImpl.java:43)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:45009)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:45012)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at com.zeroturnaround.javarebel.vj.a(SourceFile:94)
	at com.zeroturnaround.javarebel.vj.a(SourceFile:83)
	at com.zeroturnaround.javarebel.vq.a(SourceFile:196)
	at com.zeroturnaround.javarebel.wt.a(SourceFile:81)
	at com.zeroturnaround.javarebel.vq.a(SourceFile:376)
	at com.zeroturnaround.javarebel.SDKIntegrationImpl.findReloadableClass(SourceFile:104)