このエラーメッセージに関する原因と対処に関して説明します。
エラーメッセージ(英語)：
configure invalid endpoint
対処
関連リンク
How to fix AWS Cli issue? - Stack Overflow
https://stackoverflow.com/questions/35645265/how-to-fix-aws-cli-issue
AWS API Gateway simple http proxy Invalid endpoint address
https://stackoverflow.com/questions/54712688/aws-api-gateway-simple-http-proxy-invalid-endpoint-addr・・・
Getting an error "Invalid endpoint:" while running aws ec2 ...
https://stackoverflow.com/questions/51703517/getting-an-error-invalid-endpoint-while-running-aws-ec2・・・
Invalid endpoint on aws s3 ls
https://stackoverflow.com/questions/49353132/invalid-endpoint-on-aws-s3-ls
Invalid Endpoint When Attempting to Create S3 via AWSCLI
https://stackoverflow.com/questions/47879386/invalid-endpoint-when-attempting-to-create-s3-via-awscl・・・
Invalid endpoint: https://s3.US_EAST_1.amazonaws.com - GitHub
https://github.com/ionic-team/ionic2-starter-aws/issues/35
AWS のリージョンとエンドポイント - アマゾン ウェブ サービス - Amazon.com
https://docs.aws.amazon.com/ja_jp/general/latest/gr/rande.html
Troubleshooting AWS CLI Errors - AWS Command Line Interface
https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-troubleshooting.html
aws ? AWS CLI 1.16.111 Command Reference
https://docs.aws.amazon.com/cli/latest/reference/
【AWS】CLIの初期設定について（認証情報とコマンド補完） - TASK NOTES
https://www.task-notes.com/entry/20141026/1414322858