所以我试着学习飞镖和颤音,一切都进行得很顺利。但现在我被一个我无法处理的错误困住了。我编写了一个函数,它应该异步地从返回实际的BTC价格。Error: Property 'body' cannot be accessed on 'Response?' because it is potentially null.
- 'Response' is from 'package:http/src/response.dart' ('/D:/flutter/.pub-cache/hosted/pub.dar