▼テンプレート
[EC-CUBE] 4.2.0 さくらサーバーのクイックインストール
[レンタルサーバ] さくらのレンタルサーバー
[OS] Windows11
[PHP] 8.3.2
[データベース] DB名:masatomiplan_management、MySQL5.7
[WEBサーバ] WEBサーバ名:/home/masatomiplan/www
[ブラウザ] GoogleCrome123.0.6312.59
[導入プラグインの有無] なし(初期プラグインも削除済み)
[カスタマイズの有無] 管理項目からindex.twigを修正
　　　　　　　　　　　　商品詳細の商品情報を修正
　　　　　　　　　　　　問い合わせフォームの修正

[現象] 管理画面のオーナーズストア→プラグイン→プラグイン一覧画面で、公式サイトより入手したSBペイメントサービス決済プラグイン(コード:SoftbankPayment42)をインストールボタンから進みインストールしようとすると、インストール確認画面に「システムエラーが発生しました」と表示され、ログを確認すると以下のようになっていました。

[ログ]
**************** SoftbankPayment42 ****************
<warning>A script named compile would override a Composer command and has been skipped</warning>
<warning>A script named auto-scripts would override a Composer command and has been skipped</warning>
<warning>A script named installer-scripts would override a Composer command and has been skipped</warning>
[6.0MiB/0.95s] Using version ^4.2 for ec-cube/softbankpayment42
[6.0MiB/0.95s] ./composer.json has been updated
[7.3MiB/1.08s] Running composer update ec-cube/softbankpayment42 --with-dependencies
[10.2MiB/1.11s] Loading composer repositories with package information
[11.1MiB/2.06s] <warning>Dependency ec-cube/plugin-installer is also a root requirement. Package has not been listed as an update argument, so keeping locked at old version. Use --with-all-dependencies (-W) to include root dependencies.</warning>
[11.3MiB/2.11s] Updating dependencies
[12.9MiB/2.15s] Your requirements could not be resolved to an installable set of packages.
[12.9MiB/2.15s]
Problem 1
- laminas/laminas-code 4.6.0 requires php >=7.4, <8.2 -> your php version (8.3.2; overridden via config.platform, same as actual) does not satisfy that requirement.
- symfony/proxy-manager-bridge v5.4.6 requires friendsofphp/proxy-manager-lts ^1.0.2 -> satisfiable by friendsofphp/proxy-manager-lts[v1.0.12].
- friendsofphp/proxy-manager-lts v1.0.12 requires laminas/laminas-code ~3.4.1|^4.0 -> satisfiable by laminas/laminas-code[4.6.0].
- symfony/proxy-manager-bridge is locked to version v5.4.6 and an update of this package was not requested.

[12.9MiB/2.15s] <warning>Running update with --no-dev does not mean require-dev is ignored, it just means the packages will not be installed. If dev requirements are blocking the update you have to resolve those problems.</warning>
[11.8MiB/2.15s] You can also try re-running composer require with an explicit version constraint, e.g. "composer require ec-cube/SoftbankPayment42:*" to figure out if any version is installable, or "composer require ec-cube/SoftbankPayment42:^2.1" if you know which you need.
[11.8MiB/2.15s]
Installation failed, reverting ./composer.json and ./composer.lock to their original content.
[11.8MiB/2.15s] Memory usage: 11.76MiB (peak: 13.27MiB), time: 2.15s

{"success":false,"log":"\u003Cwarning\u003EA script named compile would override a Composer command and has been skipped\u003C\/warning\u003E\n\u003Cwarning\u003EA script named auto-scripts would override a Composer command and has been skipped\u003C\/warning\u003E\n\u003Cwarning\u003EA script named installer-scripts would override a Composer command and has been skipped\u003C\/warning\u003E\n[6.0MiB\/0.95s] Using version ^4.2 for ec-cube\/softbankpayment42\n[6.0MiB\/0.95s] .\/composer.json has been updated\n[7.3MiB\/1.08s] Running composer update ec-cube\/softbankpayment42 --with-dependencies\n[10.2MiB\/1.11s] Loading composer repositories with package information\n[11.1MiB\/2.06s] \u003Cwarning\u003EDependency ec-cube\/plugin-installer is also a root requirement. Package has not been listed as an update argument, so keeping locked at old version. Use --with-all-dependencies (-W) to include root dependencies.\u003C\/warning\u003E\n[11.3MiB\/2.11s] Updating dependencies\n[12.9MiB\/2.15s] Your requirements could not be resolved to an installable set of packages.\n[12.9MiB\/2.15s] \n Problem 1\n - laminas\/laminas-code 4.6.0 requires php \u003E=7.4, \u003C8.2 -\u003E your php version (8.3.2; overridden via config.platform, same as actual) does not satisfy that requirement.\n - symfony\/proxy-manager-bridge v5.4.6 requires friendsofphp\/proxy-manager-lts ^1.0.2 -\u003E satisfiable by friendsofphp\/proxy-manager-lts[v1.0.12].\n - friendsofphp\/proxy-manager-lts v1.0.12 requires laminas\/laminas-code ~3.4.1|^4.0 -\u003E satisfiable by laminas\/laminas-code[4.6.0].\n - symfony\/proxy-manager-bridge is locked to version v5.4.6 and an update of this package was not requested.\n\n[12.9MiB\/2.15s] \u003Cwarning\u003ERunning update with --no-dev does not mean require-dev is ignored, it just means the packages will not be installed. If dev requirements are blocking the update you have to resolve those problems.\u003C\/warning\u003E\n[11.8MiB\/2.15s] You can also try re-running composer require with an explicit version constraint, e.g. \u0022composer require ec-cube\/SoftbankPayment42:*\u0022 to figure out if any version is installable, or \u0022composer require ec-cube\/SoftbankPayment42:^2.1\u0022 if you know which you need.\n[11.8MiB\/2.15s] \nInstallation failed, reverting .\/composer.json and .\/composer.lock to their original content.\n[11.8MiB\/2.15s] Memory usage: 11.76MiB (peak: 13.27MiB), time: 2.15s\n"}

[行った対応]
・WEB APIプラグインの削除

お忙しいところ恐れ入りますが、ご回答いただけると幸いです。
何卒よろしくお願い申し上げます。