When I am running the iOS, then show the main menu, and two parts of the main menu category and product. When I click on the category this error is occurrs:When I am running the iOS, then show the main m
阅读背景：
终止应用程序由于未捕获的异常“NSRangeException”，原因:“*** -[__NSArrayI objectAtIndex:]:索引3超出界限[0 .. ..2]
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