Internal server error 28.0.12

Hello,
After trying to update, the server no longer works:

Internal server error

The server encountered an internal error and was unable to respond to your request.
Please contact the server administrator if this error reappears several times, please include the technical details below in your report.
More details can be found in the server log.

I enclose the logs.

thanks in advance!

{"reqId":"OsZhu7II3lv29bNUDWn2","level":3,"time":"2024-11-11T17:12:49+00:00","remoteAddr":"81.251.54.127","user":"bengw100","app":"core","method":"GET","url":"/nextcloud/index.php/apps/dashboard/","message":"Exception thrown: RuntimeException","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36","version":"28.0.12.2","exception":{"Exception":"RuntimeException","Message":"The antivirus executable could not be found at /usr/bin/clamscan","Code":0,"Trace":[{"file":"/var/www/html/nextcloud/apps/files_antivirus/lib/AppInfo/Application.php","line":53,"function":"__construct","class":"OCA\\Files_Antivirus\\Scanner\\LocalClam","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":175,"function":"OCA\\Files_Antivirus\\AppInfo\\{closure}","class":"OCA\\Files_Antivirus\\AppInfo\\Application","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php","line":118,"function":"OC\\AppFramework\\Utility\\{closure}","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":142,"function":"offsetGet","class":"Pimple\\Container","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php","line":464,"function":"query","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php","line":442,"function":"queryNoFallback","class":"OC\\AppFramework\\DependencyInjection\\DIContainer","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":64,"function":"query","class":"OC\\AppFramework\\DependencyInjection\\DIContainer","type":"->"},{"file":"/var/www/html/nextcloud/apps/files_antivirus/lib/Scanner/ScannerFactory.php","line":55,"function":"get","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->"},{"file":"/var/www/html/nextcloud/apps/files_antivirus/lib/AvirWrapper.php","line":146,"function":"getScanner","class":"OCA\\Files_Antivirus\\Scanner\\ScannerFactory","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/Files/Storage/Wrapper/Wrapper.php","line":264,"function":"file_put_contents","class":"OCA\\Files_Antivirus\\AvirWrapper","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/Files/View.php","line":1165,"function":"file_put_contents","class":"OC\\Files\\Storage\\Wrapper\\Wrapper","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/Files/View.php","line":681,"function":"basicOperation","class":"OC\\Files\\View","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/Files/Node/Folder.php","line":192,"function":"file_put_contents","class":"OC\\Files\\View","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/Files/SimpleFS/NewSimpleFile.php","line":121,"function":"newFile","class":"OC\\Files\\Node\\Folder","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/Template/JSCombiner.php","line":193,"function":"putContent","class":"OC\\Files\\SimpleFS\\NewSimpleFile","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/Template/JSCombiner.php","line":96,"function":"cache","class":"OC\\Template\\JSCombiner","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/Template/JSResourceLocator.php","line":132,"function":"process","class":"OC\\Template\\JSCombiner","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/Template/JSResourceLocator.php","line":91,"function":"cacheAndAppendCombineJsonIfExist","class":"OC\\Template\\JSResourceLocator","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/Template/ResourceLocator.php","line":73,"function":"doFind","class":"OC\\Template\\JSResourceLocator","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/TemplateLayout.php","line":403,"function":"find","class":"OC\\Template\\ResourceLocator","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/TemplateLayout.php","line":247,"function":"findJavascriptFiles","class":"OC\\TemplateLayout","type":"::"},{"file":"/var/www/html/nextcloud/lib/private/legacy/OC_Template.php","line":142,"function":"__construct","class":"OC\\TemplateLayout","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/Template/Base.php","line":132,"function":"fetchPage","class":"OC_Template","type":"->"},{"file":"/var/www/html/nextcloud/lib/private/legacy/OC_Template.php","line":291,"function":"printPage","class":"OC\\Template\\Base","type":"->"},{"file":"/var/www/html/nextcloud/index.php","line":104,"function":"printExceptionErrorPage","class":"OC_Template","type":"::"}],"File":"/var/www/html/nextcloud/apps/files_antivirus/lib/Scanner/LocalClam.php","Line":38,"CustomMessage":"Exception thrown: RuntimeException"}}

The cause seems to be this part:

"Message": "The antivirus executable could not be found at /usr/bin/clamscan",

Indeed, do you have any idea how to solve this?

You’re going to need to look at your server. You have one of the virus scanner apps enabled and it has dependencies which appear to be missing from your server environment and/or you need to properly configure the virus scanner to use a virus scanner endpoint.

How did you originally configure your virus scanner?

P.S. You completely ignored the support template so if you really want someone to try to help you, you should provide some basic information about your environment, precisely how you updated, etc.