f# - Fsharp WorldBankData 不断抛出 FS0039 错误

Question

我正在玩 FsLab 并在我从这里播放示例时遇到了问题：

https://fslab.org/getting-started/

open FSharp.Data

let wb = WorldBankData.GetDataContext()
let cz = wb.Countries.``Czech Republic``.Indicators
let eu = wb.Countries.``European Union``.Indicators

错误是 Error FS0039 The type 'Countries' does not define the field, constructor or member 'Czech Republic'.

任何线索将不胜感激。

如果有帮助，这里是包依赖项