我正在尝试构建正确的反应项目结构，以用于构建温度转换器。
问题 - 每次尝试通过类组件呈现JSx时，我都会收到以下错误：
exc_class如何更正此问题？
配置和源目录的树结构：
APIKeyError我认为导致错误的代码集是：
CelsiusComponent.js
apiInteractiveModel.js
Error: Element ref was specified as a string (container) but no owner was set. This could happen for one of the following reasons:
1. You may be adding a ref to a functional component
2. You may be adding a ref to a component that was not created inside a component's render method
3. You have multiple copies of React loaded
index.js
configuration
├── index.html
├── main.css
└── main.js
source
├── InteractiveModel.js
├── components
│ └── CelsiusComponent.js
├── css
│ └── main.css
├── index.html
└── index.js