Question

When running the errai-mvp-demo sample application via

mvn gwt:run 

I get this error:

java.lang.IllegalArgumentException: Something other than a Java object
was returned from JSNI method
‘@com.google.gwt.core.client.impl.Impl::apply(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)’:
JS value of type boolean, expected java.lang.Object at
com.google.gwt.dev.shell.JsValueGlue.get(JsValueGlue.java:178) at
com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:271)
at
com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
at com.google.gwt.core.client.impl.Impl.apply(Impl.java) at
com.google.gwt.core.client.impl.Impl.entry0(Impl.java:213) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601) at
com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at
com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at
com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
at
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:337)
at
com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218)
at
com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
at
com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
at
com.google.gwt.dev.shell.ModuleSpace.invokeNativeBoolean(ModuleSpace.java:184)
at
com.google.gwt.dev.shell.JavaScriptHost.invokeNativeBoolean(JavaScriptHost.java:35)
at
org.jboss.errai.common.client.util.LogUtil.isNativeJavaScriptLoggerSupported(LogUtil.java)
at org.jboss.errai.common.client.util.LogUtil.log(LogUtil.java:29)
at
org.jboss.errai.ioc.client.Container.boostrapContainer(Container.java:45)
at
org.jboss.errai.ioc.client.Container.onModuleLoad(Container.java:34)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601) at
com.google.gwt.dev.shell.ModuleSpace.onLoad(ModuleSpace.java:396) at
com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:200)
at
com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:525)
at
com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363)
at java.lang.Thread.run(Thread.java:722)

Answer 1

If you are using Chrome,YES.This issue is with CHROME happens .

According to @Thomos Broyer relative to the same issue on Google groups:

https://groups.google.com/forum/?fromgroups=#!topic/google-web-toolkit/b0KbD8BNsqw

Quick Fix: switch from Chrome to Firefox for Dev Mode

And you can find the same question on Stackoverflow .See answer for that question also .