how can i use externalProgress property

[ghost]

when i introduction a function, The following error occurs:

Error in event handler for "onload": "ReferenceError: UnityProgress is not defined"

[sunsongqiao2018]

In order to use the externalProgress, first you need to include the script of unityprogress.js in your index.HTML. And then set the externalProgress=unityprogress at where you instantiate Unity in vue