{"reqId":"SFEjQp0z7bHlwEqNnl2R","level":3,"time":"2020-11-05T14:25:22+00:00","remoteAddr":"178.1**","user":"Alex","app":"PHP","method":"GET","url":"/index.php/apps/files/ajax/getstoragestats.php?dir=%2F","message":{"Exception":"Error","Message":"Undefined offset: 3 at /usr/share/nginx/nextcloud/lib/private/legacy/OC_Helper.php#548","Code":0,"Trace":[{"file":"/usr/share/nginx/nextcloud/lib/private/legacy/OC_Helper.php","line":548,"function":"onError","class":"OC\\Log\\ErrorHandler","type":"::"},{"file":"/usr/share/nginx/nextcloud/apps/files/lib/Helper.php","line":51,"function":"getStorageInfo","class":"OC_Helper","type":"::"},{"file":"/usr/share/nginx/nextcloud/apps/files/lib/Controller/AjaxController.php","line":47,"function":"buildFileStorageStatistics","class":"OCA\\Files\\Helper","type":"::"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":169,"function":"getStorageStats","class":"OCA\\Files\\Controller\\AjaxController","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":100,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/App.php","line":152,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/Route/Router.php","line":308,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"/usr/share/nginx/nextcloud/lib/base.php","line":1009,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"/usr/share/nginx/nextcloud/index.php","line":37,"function":"handleRequest","class":"OC","type":"::"}],"File":"/usr/share/nginx/nextcloud/lib/private/Log/ErrorHandler.php","Line":91,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36","version":"20.0.1.1"}

поставь себе jq

с ним удобнее джисон читать

Окей

Какой апп для задач с синхронизацией через некстклауд есть?

Ну вот второй лог . Лично я ничего не понял и не нагуглил

{"reqId":"2FIgxxYcBGrV3UFLEaDO","level":3,"time":"2020-11-05T14:25:22+00:00","remoteAddr":"178.","user":"Alex","app":"core","method":"GET","url":"/core/preview?fileId=24&c=c57fceca6ff8ff5434ca6038da107f04&x=250&y=250&forceIcon=0","message":{"Exception":"ImagickException","Message":"attempt to perform an operation not allowed by the security policy `PDF' @ error/constitute.c/IsCoderAuthorized/408","Code":499,"Trace":[{"file":"/usr/share/nginx/nextcloud/lib/private/Preview/Bitmap.php","line":87,"function":"readimage","class":"Imagick","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/Preview/Bitmap.php","line":50,"function":"getResizedPreview","class":"OC\\Preview\\Bitmap","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/Preview/GeneratorHelper.php","line":63,"function":"getThumbnail","class":"OC\\Preview\\Bitmap","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/Preview/Generator.php","line":244,"function":"getThumbnail","class":"OC\\Preview\\GeneratorHelper","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/Preview/Generator.php","line":140,"function":"getMaxPreview","class":"OC\\Preview\\Generator","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/Preview/Generator.php","line":109,"function":"generatePreviews","class":"OC\\Preview\\Generator","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/PreviewManager.php","line":190,"function":"getPreview","class":"OC\\Preview\\Generator","type":"->"},{"file":"/usr/share/nginx/nextcloud/core/Controller/PreviewController.php","line":170,"function":"getPreview","class":"OC\\PreviewManager","type":"->"},{"file":"/usr/share/nginx/nextcloud/core/Controller/PreviewController.php","line":143,"function":"fetchPreview","class":"OC\\Core\\Controller\\PreviewController","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":169,"function":"getPreviewByFileId","class":"OC\\Core\\Controller\\PreviewController","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":100,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/App.php","line":152,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/Route/Router.php","line":308,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"/usr/share/nginx/nextcloud/lib/base.php","line":1009,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"/usr/share/nginx/nextcloud/index.php","line":37,"function":"handleRequest","class":"OC","type":"::"}],"File":"/usr/share/nginx/nextcloud/lib/private/Preview/Bitmap.php","Line":87,"CustomMessage":"File: /Alex/files/Reasons to use Nextcloud.pdf Imagick says:"},"userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36","version":"20.0.1.1"}

ответ в ImagickException

Забавно
attempt to perform an operation not allowed by the security policy `PDF'
File: /Alex/files/Reasons to use Nextcloud.pdf

Эти методы не помогли

Ну этот файл  я и пытался удалить )

Но вообще ни один не удаляется, хоть создаешь свою папку, хоть дефолтные файлы удаляешь

Похоже что попал в тайм-аут. Файл удалили/заняли системой, и но генерация превью таки запустилось

И ведь всего лишь вот эти 3 значения поменял... Казалось бы откати значения назад и все должно было быть ок, но нет

memory_limit =
upload_max_filesize =
post_max_size =

Попробую просканировать заново через командную строку, может поможет

Ну у меня как-то Imagick падал из-за шибко больших сканов и на почему-то кривых pdf. Пришлось фильтры на расширение править

Да ничего не помогает, переустанавливаю)

memory_limit =
upload_max_filesize =
post_max_size =

Киньте кто-нить ваши настройки из php.ini
Для слабого железа

Сразу настрою и не буду соваться туда)