redさん　サポートありがとうございます。

管理画面の設定にある「ログ表示」を開いてみました。ネット検索でログの見方を探しましたが、情報を得られませんでした。
何が原因なのでしょうか？お力添え頂ければ嬉しいです。

カテゴリー表示で真っ白になる時

全てのカテゴリーidで表示できません。
■　カテゴリーid=16
[2018-05-05 18:08:57] eccube.INFO: > GET /sample/admin/setting/system/log [] []
[2018-05-05 18:08:57] eccube.INFO: Matched route "admin_setting_system_log". {"route_parameters":{"_controller":"\\Eccube\\Controller\\Admin\\Setting\\System\\LogController::index","_route":"admin_setting_system_log"},"request_uri":"http://localhost/sample/admin/setting/system/log"} []
[2018-05-05 18:08:43] eccube.INFO: > GET /sample/products/list?category_id=16 []
[]

■　カテゴリーid=33
[2018-05-05 18:11:45] eccube.INFO: > GET /sample/admin/setting/system/log [] []
[2018-05-05 18:11:45] eccube.INFO: Matched route "admin_setting_system_log". {"route_parameters":{"_controller":"\\Eccube\\Controller\\Admin\\Setting\\System\\LogController::index","_route":"admin_setting_system_log"},"request_uri":"http://localhost/sample/admin/setting/system/log"} []
[2018-05-05 18:11:38] eccube.INFO: > GET /sample/products/list?category_id=33 [] []
[2018-05-05 18:11:38] eccube.INFO: Populated the TokenStorage with an anonymous Token. [] []
[2018-05-05 18:11:38] eccube.INFO: Matched route "product_list". {"route_parameters":{"_controller":"\\Eccube\\Controller\\ProductController::index","_route":"product_list"},"request_uri":"http://localhost/sample/products/list?category_id=33"} []


■　受注マスターで検索ボタンを押した時

[2018-05-05 18:10:13] eccube.INFO: Matched route "admin_setting_system_log". {"route_parameters":{"_controller":"\\Eccube\\Controller\\Admin\\Setting\\System\\LogController::index","_route":"admin_setting_system_log"},"request_uri":"http://localhost/sample/admin/setting/system/log"} []
[2018-05-05 18:09:49] eccube.INFO: > POST /sample/admin/order [] []
[2018-05-05 18:09:49] eccube.INFO: Matched route "admin_order". {"route_parameters":{"_controller":"\\Eccube\\Controller\\Admin\\Order\\OrderController::index","_route":"admin_order"},"request_uri":"http://localhost/sample/admin/order"} []
[2018-05-05 18:09:47] eccube.INFO: < 200 [] []
[2018-05-05 18:09:46] eccube.INFO: > GET /sample/admin/order [] []
[2018-05-05 18:09:46] eccube.INFO: Matched route "admin_order". {"route_parameters":{"_controller":"\\Eccube\\Controller\\Admin\\Order\\OrderController::index","_route":"admin_order"},"request_uri":"http://localhost/sample/admin/order"} []