Property or method “index“ is not defined on the instance but referenced during render
Property or method "index" is not defined on the instance but referenced during render.Make sure that this property is reactive, either in the data option, or for class-based components, by initializi
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Property or method “index” is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property.
属性或方法“index”不是在实例上定义的,而是在呈现时引用的。通过初始化该属性,确保该属性是响应式的,无论是在数据选项中,还是在基于类的组件中。
**解决方案 **
查看文件中是否有这个变量,是否定义了这个变量
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