Comments (2)
niloc132
commented on June 27, 2024
I believe this is a duplicate of #9809, based on the abbreviated stack trace - can you confirm?
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jnehlmeier
commented on June 27, 2024
GWT 2.11 ships with Jetty 9.4.44.
The error says we have an instance of WebAppContextWithReload, provided by GWT SDK, loaded by classloader A but its superclass WebAppContext, provided by GWT SDK AND your jetty dependency, is loaded by classloader B.
Why do you have Jetty in your dependencies with scope runtime?
If you customize jetty then you likely cannot use the embedded Jetty provided by GWT SDK. Using the embedded Jetty as a full fledged application server that you can customize has been deprecated for exactly that reason. You should launch your own Jetty, deploy your server application to it and use GWT SDK to only launch SuperDevMode to compile the app to JS.
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