There is no getter for property named 'index_value9' in 'class com.ruoyi.task.domain.stat.ViewPerformanceStatememt'

It seems that there is no getter method for the property named 'index_value9' in the class 'com.ruoyi.task.domain.stat.ViewPerformanceStatememt'. To access this property, you will need to add a getter method in the class. Here's an example of how you can define a getter method for the 'index_value9' property:

public class ViewPerformanceStatememt {
    private String index_value9;

    public String getIndex_value9() {
        return index_value9;
    }

    public void setIndex_value9(String index_value9) {
        this.index_value9 = index_value9;
    }

    // Other getter and setter methods for other properties
}

By adding this getter method, you will be able to access the 'index_value9' property using the `getIndex_value9()` method.