Clean definitions of app-level exception classes
Clean definitions of app-level exception classes

hippyvm/hippyvm,xhava/hippyvm,hippyvm/hippyvm,xhava/hippyvm,xhava/hippyvm,xhava/hippyvm,hippyvm/hippyvm,xhava/hippyvm,hippyvm/hippyvm,hippyvm/hippyvm,hippyvm/hippyvm,xhava/hippyvm,hippyvm/hippyvm,xhava/hippyvm