我想让标签出现并消失,但我在grid_forget()上遇到了问题。这是守则的一部分: showinfo( "Wait.."vsl.grid_forget() showerror( "Nope!","There is already a backup to restore")这是控制台的错误:
AttributeError: &
code is available for type com.gwtplatform.dispatch.server.actionhandler.ActionHandler<A,R>; did you forgetERROR] Line 19: No source code is available for type javax.servlet.http.HttpServletRequest; did you forget[ERROR] Line 21: No source code is available for type javax.ser