[EC-CUBE]　4.2.3　新規インストール
[OS] AlmaLinux 9.4
[PHP] 使用しているPHPのバージョン
[データベース] MySQL 8
[WEBサーバ] Apache 2.4.57
[ブラウザ] Google Chrome
[導入プラグインの有無] 無
[カスタマイズの有無] 無
[現象]プラグインのインストールをしようと管理画面より「プラグインを探す」や「プラグイン一覧」をクリックすると「オーナーズストアとの通信に失敗しました。時間を置いてもう一度お試しください」のメッセージが出てしまいます。

EC-CUBEのログを見てみましたが「システムエラーが発生しました」などは出ていないようです。
どのような原因が考えられますでしょうか。
お知恵を拝借したく投稿しております。よろしくお願いします。

↓プラグインのページを開いた後、直近のログを抜粋しました。

[2024-06-03T19:25:00.768116+09:00] request.INFO [N/A] [368b987] [N/A] [Symfony\Component\HttpKernel\EventListener\RouterListener:onKernelRequest:121] - Matched route "admin_setting_system_log". {"route":"admin_setting_system_log","route_parameters":{"_route":"admin_setting_system_log","_controller":"Eccube\\Controller\\Admin\\Setting\\System\\LogController::index"},"request_uri":"https://■■■/setting/system/log","method":"GET"} [GET, /admin_ymest/setting/system/log, xx.xx.xx.xx, https://■■■/store/plugin/authentication_setting, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]
[2024-06-03T19:24:56.045052+09:00] request.INFO [N/A] [bcd9a24] [N/A] [Symfony\Component\HttpKernel\EventListener\RouterListener:onKernelRequest:121] - Matched route "admin_store_authentication_setting". {"route":"admin_store_authentication_setting","route_parameters":{"_route":"admin_store_authentication_setting","_controller":"Eccube\\Controller\\Admin\\Store\\PluginController::authenticationSetting"},"request_uri":"https://■■■/store/plugin/authentication_setting","method":"GET"} [GET, /admin_ymest/store/plugin/authentication_setting, xx.xx.xx.xx, https://■■■/store/plugin/authentication_setting, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]
[2024-06-03T19:24:54.111739+09:00] request.INFO [N/A] [527e8cb] [N/A] [Symfony\Component\HttpKernel\EventListener\RouterListener:onKernelRequest:121] - Matched route "admin_store_authentication_setting". {"route":"admin_store_authentication_setting","route_parameters":{"_route":"admin_store_authentication_setting","_controller":"Eccube\\Controller\\Admin\\Store\\PluginController::authenticationSetting"},"request_uri":"https://■■■/store/plugin/authentication_setting","method":"GET"} [GET, /admin_ymest/store/plugin/authentication_setting, xx.xx.xx.xx, https://■■■/store/plugin/authentication_setting, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]

[2024-06-03T19:24:54.013055+09:00] admin.INFO [1d3d8f6d] [9ed65b5] [1] [Eccube\Log\Logger:log:64] - <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> {"command":"config","setting-key":"repositories.eccube","setting-value":["{\"type\":\"composer\",\"url\":\"https:\\/\\/package-api-c2.ec-cube.net\\/v42\",\"options\":{\"http\":{\"header\":[\"X-ECCUBE-KEY: ce30685a4ee104ff09d1e7a6f878aba8ead115d4\"]}}}"],"--no-interaction":true,"--working-dir":"/var/www/html/ymest","--no-ansi":true} [POST, /admin_ymest/store/plugin/authentication_setting, xx.xx.xx.xx, https://■■■/store/plugin/authentication_setting, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]

[2024-06-03T19:24:54.002251+09:00] admin.INFO [1d3d8f6d] [9ed65b5] [1] [Eccube\Log\Logger:log:64] - <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> {"command":"config","setting-key":"platform.php","setting-value":["8.1.28"],"--no-interaction":true,"--working-dir":"/var/www/html/ymest","--no-ansi":true} [POST, /admin_ymest/store/plugin/authentication_setting, xx.xx.xx.xx, https://■■■/store/plugin/authentication_setting, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]
[2024-06-03T19:24:53.989007+09:00] admin.INFO [1d3d8f6d] [9ed65b5] [1] [Eccube\Log\Logger:log:64] - [repositories.eccube.type] composer [repositories.eccube.url] https://package-api-c2.ec-cube.net/v42 [repositories.eccube.options.http.header] [X-ECCUBE-KEY: ce30685a4ee104ff09d1e7a6f878aba8ead115d4] [repositories.packagist.org.type] composer [repositories.packagist.org.url] https://repo.packagist.org [process-timeout] 300 [use-include-path] false [allow-plugins.composer/*] true [allow-plugins.kylekatarnls/update-helper] true [allow-plugins.ec-cube/plugin-installer] true [allow-plugins.symfony/flex] true [use-parent-dir] prompt [preferred-install.*] dist [notify-on-install] true [github-protocols] [https, ssh] [gitlab-protocol] [vendor-dir] vendor (/var/www/html/ymest/vendor) [bin-dir] {$vendor-dir}/bin (/var/www/html/ymest/vendor/bin) [cache-dir] /var/www/html/ymest/app/Plugin/.composer/cache [data-dir] /var/www/html/ymest/app/Plugin/.composer [cache-files-dir] {$cache-dir}/files (/var/www/html/ymest/app/Plugin/.composer/cache/files) [cache-repo-dir] {$cache-dir}/repo (/var/www/html/ymest/app/Plugin/.composer/cache/repo) [cache-vcs-dir] {$cache-dir}/vcs (/var/www/html/ymest/app/Plugin/.composer/cache/vcs) [cache-ttl] 15552000 [cache-files-ttl] 15552000 [cache-files-maxsize] 300MiB (314572800) [cache-read-only] false [bin-compat] auto [discard-changes] false [autoloader-suffix] [sort-packages] true [optimize-autoloader] true [classmap-authoritative] false [apcu-autoloader] false [prepend-autoloader] true [github-domains] [github.com] [bitbucket-expose-hostname] true [disable-tls] false [secure-http] true [cafile] [capath] [github-expose-hostname] true [gitlab-domains] [gitlab.com] [store-auths] prompt [platform.php] 8.1.28 [archive-format] tar [archive-dir] . [htaccess-protect] true [use-github-api] true [lock] true [platform-check] php-only [home] /var/www/html/ymest/app/Plugin/.composer {"command":"config","--list":true,"--working-dir":"/var/www/html/ymest","--no-ansi":true} [POST, /admin_ymest/store/plugin/authentication_setting, xx.xx.xx.xx, https://■■■/store/plugin/authentication_setting, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]

[2024-06-03T19:24:53.683634+09:00] request.INFO [N/A] [9ed65b5] [N/A] [Symfony\Component\HttpKernel\EventListener\RouterListener:onKernelRequest:121] - Matched route "admin_store_authentication_setting". {"route":"admin_store_authentication_setting","route_parameters":{"_route":"admin_store_authentication_setting","_controller":"Eccube\\Controller\\Admin\\Store\\PluginController::authenticationSetting"},"request_uri":"https://■■■/store/plugin/authentication_setting","method":"POST"} [POST, /admin_ymest/store/plugin/authentication_setting, xx.xx.xx.xx, https://■■■/store/plugin/authentication_setting, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]
[2024-06-03T19:24:46.993032+09:00] request.INFO [N/A] [f642f22] [N/A] [Symfony\Component\HttpKernel\EventListener\RouterListener:onKernelRequest:121] - Matched route "admin_store_authentication_setting". {"route":"admin_store_authentication_setting","route_parameters":{"_route":"admin_store_authentication_setting","_controller":"Eccube\\Controller\\Admin\\Store\\PluginController::authenticationSetting"},"request_uri":"https://■■■/store/plugin/authentication_setting","method":"GET"} [GET, /admin_ymest/store/plugin/authentication_setting, xx.xx.xx.xx, https://■■■/store/plugin/authentication_setting, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]
[2024-06-03T19:24:46.823050+09:00] request.INFO [N/A] [5ead9c1] [N/A] [Symfony\Component\HttpKernel\EventListener\RouterListener:onKernelRequest:121] - Matched route "admin_store_authentication_setting". {"route":"admin_store_authentication_setting","route_parameters":{"_route":"admin_store_authentication_setting","_controller":"Eccube\\Controller\\Admin\\Store\\PluginController::authenticationSetting"},"request_uri":"https://■■■/store/plugin/authentication_setting","method":"GET"} [GET, /admin_ymest/store/plugin/authentication_setting, xx.xx.xx.xx, https://■■■/store/plugin, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]
[2024-06-03T19:24:35.996456+09:00] admin.INFO [1d3d8f6d] [e65d0e3] [1] [Eccube\Log\Logger:log:64] - http get_info {"url":"https://package-api-c2.ec-cube.net/v42/plugins/purchased","content_type":null,"http_code":0,"header_size":0,"request_size":0,"filetime":-1,"ssl_verify_result":0,"redirect_count":0,"total_time":10.041421,"namelookup_time":0.0,"connect_time":0.0,"pretransfer_time":0.0,"size_upload":0.0,"size_download":0.0,"speed_download":0.0,"speed_upload":0.0,"download_content_length":-1.0,"upload_content_length":-1.0,"starttransfer_time":0.0,"redirect_time":0.0,"redirect_url":"","primary_ip":"","certinfo":[],"primary_port":0,"local_ip":"","local_port":0,"http_version":0,"protocol":0,"ssl_verifyresult":0,"scheme":"","appconnect_time_us":0,"connect_time_us":0,"namelookup_time_us":0,"pretransfer_time_us":0,"redirect_time_us":0,"starttransfer_time_us":0,"total_time_us":10041421,"message":"Resolving timed out after 5001 milliseconds"} [GET, /admin_ymest/store/plugin, xx.xx.xx.xx, https://■■■/store/plugin/api/search, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]
[2024-06-03T19:24:25.935797+09:00] request.INFO [N/A] [e65d0e3] [N/A] [Symfony\Component\HttpKernel\EventListener\RouterListener:onKernelRequest:121] - Matched route "admin_store_plugin". {"route":"admin_store_plugin","route_parameters":{"_route":"admin_store_plugin","_controller":"Eccube\\Controller\\Admin\\Store\\PluginController::index"},"request_uri":"https://■■■/store/plugin","method":"GET"} [GET, /admin_ymest/store/plugin, xx.xx.xx.xx, https://■■■/store/plugin/api/search, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]
[2024-06-03T19:24:22.305031+09:00] admin.INFO [1d3d8f6d] [fe01bd3] [1] [Eccube\Log\Logger:log:64] - http get_info {"url":"https://package-api-c2.ec-cube.net/v42/plugins?price_type=all&page=1&per_page=50","content_type":null,"http_code":0,"header_size":0,"request_size":0,"filetime":-1,"ssl_verify_result":0,"redirect_count":0,"total_time":10.044443,"namelookup_time":0.0,"connect_time":0.0,"pretransfer_time":0.0,"size_upload":0.0,"size_download":0.0,"speed_download":0.0,"speed_upload":0.0,"download_content_length":-1.0,"upload_content_length":-1.0,"starttransfer_time":0.0,"redirect_time":0.0,"redirect_url":"","primary_ip":"","certinfo":[],"primary_port":0,"local_ip":"","local_port":0,"http_version":0,"protocol":0,"ssl_verifyresult":0,"scheme":"","appconnect_time_us":0,"connect_time_us":0,"namelookup_time_us":0,"pretransfer_time_us":0,"redirect_time_us":0,"starttransfer_time_us":0,"total_time_us":10044443,"message":"Resolving timed out after 5000 milliseconds"} [GET, /admin_ymest/store/plugin/api/search, xx.xx.xx.xx, https://■■■/setting/system/log, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]
[2024-06-03T19:24:12.252925+09:00] admin.INFO [1d3d8f6d] [fe01bd3] [1] [Eccube\Log\Logger:log:64] - http get_info {"url":"https://package-api-c2.ec-cube.net/v42/category","content_type":null,"http_code":0,"header_size":0,"request_size":0,"filetime":-1,"ssl_verify_result":0,"redirect_count":0,"total_time":10.045657,"namelookup_time":0.0,"connect_time":0.0,"pretransfer_time":0.0,"size_upload":0.0,"size_download":0.0,"speed_download":0.0,"speed_upload":0.0,"download_content_length":-1.0,"upload_content_length":-1.0,"starttransfer_time":0.0,"redirect_time":0.0,"redirect_url":"","primary_ip":"","certinfo":[],"primary_port":0,"local_ip":"","local_port":0,"http_version":0,"protocol":0,"ssl_verifyresult":0,"scheme":"","appconnect_time_us":0,"connect_time_us":0,"namelookup_time_us":0,"pretransfer_time_us":0,"redirect_time_us":0,"starttransfer_time_us":0,"total_time_us":10045657,"message":"Resolving timed out after 5000 milliseconds"} [GET, /admin_ymest/store/plugin/api/search, xx.xx.xx.xx, https://■■■/setting/system/log, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]
[2024-06-03T19:24:02.194873+09:00] request.INFO [N/A] [fe01bd3] [N/A] [Symfony\Component\HttpKernel\EventListener\RouterListener:onKernelRequest:121] - Matched route "admin_store_plugin_owners_search". {"route":"admin_store_plugin_owners_search","route_parameters":{"_route":"admin_store_plugin_owners_search","_controller":"Eccube\\Controller\\Admin\\Store\\OwnerStoreController::search"},"request_uri":"https://■■■/store/plugin/api/search","method":"GET"} [GET, /admin_ymest/store/plugin/api/search, xx.xx.xx.xx, https://■■■/setting/system/log, Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36]

引用：

使用しているサーバが、記載されていないのでレンタルサーバなのかご自身で構築したサーバなのか解らないので、ネットワークのファイヤーウォールなどで制限しているか解りませんが考えられる事項としては

・ファイヤーウォールなどで、ネットワーク制限をしている
・EC-CUBEオーナーズストアがネットワーク混雑やメンテナンスを行っている

のどちらかかと思います。
もう一度、EC-CUBEオーナーズストアにてプラグインをインストールしてみてください。
状況が変わらない様であれば、ファイヤーウォールなどの制限かと思いますので、ご利用のサーバ会社にご相談してみてください。

----------------
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
EC-CUBEインテグレートパートナー【ゴールド】ランク
M&I Works
URL: https://miworks.biz/
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

アドバイスいただきありがとうございます。

サーバは自身構築サーバとなっておりますのでネットワークまわりなど調査してみたいと思います。

本件、環境周りの設定で解決できましたか？

もし解決できていなかった場合ですが、該当のエラーは、EC-CUBE内からのcurl実行でタイムアウトを起こしている可能性があります。

タイムアウト値が5秒で設定されているので、この時間を書き換えることで対処できるかもしれません。

本来的には5秒以上レスポンスがない原因に対処する方が良いと思いますが、とりあえず動かしたいということであれば、この設定で試すのも手だと思います。

src/Eccube/Service/PluginApiService.phpに

CURLOPT_TIMEOUT_MS => 5000

という行がありますので、この値を変更することで調整できます。