> Could not download kotlin-reflect.jar (org.jetbrains.kotlin:kotlin-reflect:1.3.21)

[MagicSource]

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':shared_preferences'.
> Could not resolve all artifacts for configuration ':shared_preferences:classpath'.
   > Could not download kotlin-reflect.jar (org.jetbrains.kotlin:kotlin-reflect:1.3.21)
      > Could not get resource 'https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-reflect/1.3.21/kotlin-reflect-1.3.21.jar'.
         > Could not GET 'https://d29vzk4ow07wi7.cloudfront.net/a3065c822633191e0a3e3ee12a29bec234fc4b2864a6bb87ef48cce3e9e0c26a?response-content-disposition=attachment%3Bfilename%3D%22kotlin-reflect-1.3.21.jar%22&Policy=eyJTdGF0ZW1lbnQiOiBbeyJSZXNvdXJjZSI6Imh0dHAqOi8vZDI5dnprNG93MDd3aTcuY2xvdWRmcm9udC5uZXQvYTMwNjVjODIyNjMzMTkxZTBhM2UzZWUxMmEyOWJlYzIzNGZjNGIyODY0YTZiYjg3ZWY0OGNjZTNlOWUwYzI2YT9yZXNwb25zZS1jb250ZW50LWRpc3Bvc2l0aW9uPWF0dGFjaG1lbnQlM0JmaWxlbmFtZSUzRCUyMmtvdGxpbi1yZWZsZWN0LTEuMy4yMS5qYXIlMjIiLCJDb25kaXRpb24iOnsiRGF0ZUxlc3NUaGFuIjp7IkFXUzpFcG9jaFRpbWUiOjE1ODIyNjk2Mzh9LCJJcEFkZHJlc3MiOnsiQVdTOlNvdXJjZUlwIjoiMC4wLjAuMC8wIn19fV19&Signature=c-T3jrsJeAtFfbjH7FwfvHRBv6k5hUxL3lFdTJfMPAIUBWs39--HLFfHst1NGYJSA629BLF7LM-RWa3U2kEt3GSsqHQMf47I97XRXR7sUVT9RNc-fTL1SY6gNKBGCSnvvV~5pwbAG6fixZTougP83K7U46ogJu~uU4m5GH2HqNB5qkZo6dB47pTj8MvRrFvX6rX3uxJBKKN0Jz598NKU-euqjQiiAkyGM9RzQ6Y9vJ2EpSbuj4dS1gDJgHEAUMSz3cOaZo9M6o4vqSTOj8EYB-2~eZFnmsLnHrBtTJAmRLOJoTMTJr3W6IYK3H8guscL6TsTIK8LK2Oz8ULwgUxPvw__&Key-Pair-Id=APKAIFKFWOMXM2UMTSFA'.
            > Received close_notify during handshake
> Failed to notify project evaluation listener.
   > Could not get unknown property 'android' for project ':shared_preferences' of type org.gradle.api.Project.
   > Could not find method implementation() for arguments [project ':shared_preferences_macos'] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.
   > Could not find method implementation() for arguments [project ':shared_preferences_web'] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

[xuyisheng]

网络问题，多试几次，你懂的