问‘`MonadThrow`’不在范围内，从LTS 11.0开始

EN

{-# LANGUAGE NoImplicitPrelude #-}
{-# LANGUAGE OverloadedStrings #-}
module Main where

import ClassyPrelude
import Network.HTTP.Conduit (host)

hostnameFromUrl :: MonadThrow m => Text -> m Text
hostnameFromUrl url = do
    return $ decodeUtf8 $ host "helloworld.com"

/Users/me/.../temp/Main.hs:8:20: error:
    Not in scope: type constructor or class ‘MonadThrow’
  |
8 | hostnameFromUrl :: MonadThrow m => Text -> m Text
  |                    ^^^^^^^^^^

resolver: lts-11.0
packages:
  - '.'
flags: {}
extra-package-dbs: []

name:                temp
version:             0.0
build-type:          Simple
-- extra-source-files:
cabal-version:       >=1.10

library
  hs-source-dirs:      .
  exposed-modules:     Main
  ghc-options:         -Wall
  build-depends:       classy-prelude >= 1.0.0.2
                     , http-conduit >= 2.1
  default-language:    Haskell2010