1. やりたい・やりたかったこと

S3を利用するためのライブラリをインストールしたい

2. 起きている問題やエラーメッセージ

※できるだけ詳細に記載ください
※必要のない項目であれば削除してください
※テキストをコピー＆ぺーストしてください

1ec2-user:~/environment/Amazon/samazon (master) $ composer require league/flysystem-aws-s3-v3
2Using version ^2.0 for league/flysystem-aws-s3-v3
3./composer.json has been updated
4Running composer update league/flysystem-aws-s3-v3
5Loading composer repositories with package information
6Updating dependencies
7Your requirements could not be resolved to an installable set of packages.
8
9  Problem 1
10    - league/flysystem-aws-s3-v3[2.0.0, ..., 2.x-dev] require league/flysystem ^2.0.0 -> found league/flysystem[2.0.0-alpha.1, ..., 2.x-dev] but the package is fixed to 1.1.3 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.
11    - league/flysystem-aws-s3-v3[2.0.0-alpha.1, ..., 2.0.0-alpha.2] require league/flysystem 2.0.0-alpha.1 -> found league/flysystem[2.0.0-alpha.1] but the package is fixed to 1.1.3 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.
12    - league/flysystem-aws-s3-v3[2.0.0-alpha.4, ..., 2.0.0-beta.1] require league/flysystem 2.0.0-alpha.3 -> found league/flysystem[2.0.0-alpha.3] but the package is fixed to 1.1.3 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.
13    - league/flysystem-aws-s3-v3[2.0.0-beta.2, ..., 2.0.0-beta.3] require league/flysystem ^2.0.0-beta.1 -> found league/flysystem[2.0.0-beta.1, ..., 2.x-dev] but the package is fixed to 1.1.3 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.
14    - league/flysystem-aws-s3-v3 2.0.0-RC1 requires league/flysystem ^2.0.0-RC1 -> found league/flysystem[2.0.0-RC1, ..., 2.x-dev] but the package is fixed to 1.1.3 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.
15    - Root composer.json requires league/flysystem-aws-s3-v3 ^2.0 -> satisfiable by league/flysystem-aws-s3-v3[2.0.0-alpha.1, ..., 2.x-dev].
16
17Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.
18
19Installation failed, reverting ./composer.json and ./composer.lock to their original content.
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3. 関連するソースコード

※Githubのリポジトリリンクでも可
※必要のない項目であれば削除してください

1composer require league/flysystem-aws-s3-v3
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4. 試したこと

※ここに試したことを詳しく書いてください
※必要のない項目であれば削除してください
※例1. 〇〇の記事を読んで、[ git add. ] をしたが全く反応しなかった
※例2. [ xx xxx ] とGoogleで検索したが全く答えに辿り付けなかった
※例3. https://** を参考に xxx してみた

5. 使用言語・ライブラリのバージョン

※ここに前提情報を詳しく書いてください
※必要のない項目であれば削除してください
※Rubyのバージョンは「ruby -v」で調べられます
※例1. Ruby 2.4 Rails 6.0