GWT - ERRO Unable to load module entry point class (see associated exception for details)

[ERROR] Unable to load module entry point class com.mcpd.client.TaskForm (see associated exception for details)

java.lang.NullPointerException: null

at com.mcpd.client.TaskForm.onModuleLoad(TaskForm.java:24)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at com.google.gwt.dev.shell.ModuleSpace.onLoad(ModuleSpace.java:320)

at com.google.gwt.dev.shell.BrowserWidget.attachModuleSpace(BrowserWidget.java:329)

at com.google.gwt.dev.shell.ie.BrowserWidgetIE6.access$300(BrowserWidgetIE6.java:37)

at com.google.gwt.dev.shell.ie.BrowserWidgetIE6$External.gwtOnLoad(BrowserWidgetIE6.java:76)

at com.google.gwt.dev.shell.ie.BrowserWidgetIE6$External.invoke(BrowserWidgetIE6.java:139)

at com.google.gwt.dev.shell.ie.IDispatchImpl.Invoke(IDispatchImpl.java:294)

at com.google.gwt.dev.shell.ie.IDispatchImpl.method6(IDispatchImpl.java:194)

at org.eclipse.swt.internal.ole.win32.COMObject.callback6(COMObject.java:117)

at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)

at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1925)

at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2966)

at com.google.gwt.dev.GWTShell.pumpEventLoop(GWTShell.java:720)

at com.google.gwt.dev.GWTShell.run(GWTShell.java:593)

at com.google.gwt.dev.GWTShell.main(GWTShell.java:357)