[ERROR] [xrequestfactory] - : No source code is available for type com.request.server.xxxRequestFactory; did you forget to inherit a required module?

I am getting the following error please help me out, Thanks in Advance...

[ERROR] [crequestfactory] - Line 17: No source code is available for type com.request.server.EmployeeRequestFactory; did you forget to inherit a required module?

[ERROR] [crequestfactory] - Unable to find type 'com.request.client.CRequestFactory'

[ERROR] [crequestfactory] - Hint: Previous compiler errors may have made this type unavailable

[ERROR] [crequestfactory] - Hint: Check the inheritance chain from your module; it may not be inheriting a required module or a module may not be adding its source path entries properly

[ERROR] [crequestfactory] - Failed to load module 'crequestfactory' from user agent 'Mozilla/5.0 (Windows NT 6.1; rv:26.0) Gecko/20100101 Firefox/26.0' at 127.0.0.1:52957

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