Why can't the value returned by echarts dynamic request render the chart?

at first, the mock data format is as follows, and the icon is normal and can be rendered:

$scope.Data = [{ name: "", value: 99 }, { name: "", value: 199 }];

but after interfacing with the interface, the observed data is in the same format as the above data format, so why not render the graph? There is no error in the console. I don"t know what the situation is

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Mar.10,2021

Debug the break point to make sure the code executes correctly.

and whether the data format passed in echarts is what you expect it to be.

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