I reboot few times and log is always very, very long [55,9MB]. At the end I see something like this:
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{"reqId":"8t1Be8cvrQgMzsdO0hWA","level":3,"time":"2021-01-15T19:10:06+00:00","remoteAddr":"","user":"--","app":"files_antivirus","method":"","url":"--","message":{"Exception":"RuntimeException","Message":"The antivirus executable could not be found at /usr/bin/clamscan","Code":0,"Trace":[{"function":"__construct","class":"OCA\\Files_Antivirus\\Scanner\\LocalClam","type":"->","args":[{"__class__":"OCA\\Files_Antivirus\\AppConfig"},{"__class__":"OC\\AppFramework\\Logger"},{"__class__":"OCA\\Files_Antivirus\\StatusFactory"}]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":84,"function":"newInstanceArgs","class":"ReflectionClass","type":"->","args":[[{"__class__":"OCA\\Files_Antivirus\\AppConfig"},{"__class__":"OC\\AppFramework\\Logger"},{"__class__":"OCA\\Files_Antivirus\\StatusFactory"}]]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":101,"function":"buildClass","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->","args":[{"name":"OCA\\Files_Antivirus\\Scanner\\LocalClam","__class__":"ReflectionClass"}]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":116,"function":"resolve","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->","args":["OCA\\Files_Antivirus\\Scanner\\LocalClam"]},{"file":"/var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php","line":414,"function":"query","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->","args":["OCA\\Files_Antivirus\\Scanner\\LocalClam"]},{"file":"/var/www/nextcloud/lib/private/ServerContainer.php","line":133,"function":"queryNoFallback","class":"OC\\AppFramework\\DependencyInjection\\DIContainer","type":"->","args":["OCA\\Files_Antivirus\\Scanner\\LocalClam"]},{"file":"/var/www/nextcloud/apps/files_antivirus/lib/Scanner/ScannerFactory.php","line":45,"function":"query","class":"OC\\ServerContainer","type":"->","args":["OCA\\Files_Antivirus\\Scanner\\LocalClam"]},{"file":"/var/www/nextcloud/apps/files_antivirus/lib/BackgroundJob/BackgroundScanner.php","line":334,"function":"getScanner","class":"OCA\\Files_Antivirus\\Scanner\\ScannerFactory","type":"->","args":[]},{"file":"/var/www/nextcloud/apps/files_antivirus/lib/BackgroundJob/BackgroundScanner.php","line":121,"function":"scanOneFile","class":"OCA\\Files_Antivirus\\BackgroundJob\\BackgroundScanner","type":"->","args":[{"__class__":"OC\\Files\\Node\\File"}]},{"file":"/var/www/nextcloud/lib/private/BackgroundJob/Job.php","line":62,"function":"run","class":"OCA\\Files_Antivirus\\BackgroundJob\\BackgroundScanner","type":"->","args":[null]},{"file":"/var/www/nextcloud/lib/private/BackgroundJob/TimedJob.php","line":57,"function":"execute","class":"OC\\BackgroundJob\\Job","type":"->","args":[{"__class__":"OC\\BackgroundJob\\JobList"},{"__class__":"OC\\Log"}]},{"file":"/var/www/nextcloud/cron.php","line":126,"function":"execute","class":"OC\\BackgroundJob\\TimedJob","type":"->","args":[{"__class__":"OC\\BackgroundJob\\JobList"},{"__class__":"OC\\Log"}]}],"File":"/var/www/nextcloud/apps/files_antivirus/lib/Scanner/LocalClam.php","Line":43,"CustomMessage":"--"},"userAgent":"--","version":"19.0.5.2"}
{"reqId":"8t1Be8cvrQgMzsdO0hWA","level":3,"time":"2021-01-15T19:10:06+00:00","remoteAddr":"","user":"--","app":"files_antivirus","method":"","url":"--","message":{"Exception":"RuntimeException","Message":"The antivirus executable could not be found at /usr/bin/clamscan","Code":0,"Trace":[{"function":"__construct","class":"OCA\\Files_Antivirus\\Scanner\\LocalClam","type":"->","args":[{"__class__":"OCA\\Files_Antivirus\\AppConfig"},{"__class__":"OC\\AppFramework\\Logger"},{"__class__":"OCA\\Files_Antivirus\\StatusFactory"}]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":84,"function":"newInstanceArgs","class":"ReflectionClass","type":"->","args":[[{"__class__":"OCA\\Files_Antivirus\\AppConfig"},{"__class__":"OC\\AppFramework\\Logger"},{"__class__":"OCA\\Files_Antivirus\\StatusFactory"}]]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":101,"function":"buildClass","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->","args":[{"name":"OCA\\Files_Antivirus\\Scanner\\LocalClam","__class__":"ReflectionClass"}]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":116,"function":"resolve","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->","args":["OCA\\Files_Antivirus\\Scanner\\LocalClam"]},{"file":"/var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php","line":414,"function":"query","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->","args":["OCA\\Files_Antivirus\\Scanner\\LocalClam"]},{"file":"/var/www/nextcloud/lib/private/ServerContainer.php","line":133,"function":"queryNoFallback","class":"OC\\AppFramework\\DependencyInjection\\DIContainer","type":"->","args":["OCA\\Files_Antivirus\\Scanner\\LocalClam"]},{"file":"/var/www/nextcloud/apps/files_antivirus/lib/Scanner/ScannerFactory.php","line":45,"function":"query","class":"OC\\ServerContainer","type":"->","args":["OCA\\Files_Antivirus\\Scanner\\LocalClam"]},{"file":"/var/www/nextcloud/apps/files_antivirus/lib/BackgroundJob/BackgroundScanner.php","line":334,"function":"getScanner","class":"OCA\\Files_Antivirus\\Scanner\\ScannerFactory","type":"->","args":[]},{"file":"/var/www/nextcloud/apps/files_antivirus/lib/BackgroundJob/BackgroundScanner.php","line":121,"function":"scanOneFile","class":"OCA\\Files_Antivirus\\BackgroundJob\\BackgroundScanner","type":"->","args":[{"__class__":"OC\\Files\\Node\\File"}]},{"file":"/var/www/nextcloud/lib/private/BackgroundJob/Job.php","line":62,"function":"run","class":"OCA\\Files_Antivirus\\BackgroundJob\\BackgroundScanner","type":"->","args":[null]},{"file":"/var/www/nextcloud/lib/private/BackgroundJob/TimedJob.php","line":57,"function":"execute","class":"OC\\BackgroundJob\\Job","type":"->","args":[{"__class__":"OC\\BackgroundJob\\JobList"},{"__class__":"OC\\Log"}]},{"file":"/var/www/nextcloud/cron.php","line":126,"function":"execute","class":"OC\\BackgroundJob\\TimedJob","type":"->","args":[{"__class__":"OC\\BackgroundJob\\JobList"},{"__class__":"OC\\Log"}]}],"File":"/var/www/nextcloud/apps/files_antivirus/lib/Scanner/LocalClam.php","Line":43,"CustomMessage":"--"},"userAgent":"--","version":"19.0.5.2"}
{"reqId":"8t1Be8cvrQgMzsdO0hWA","level":3,"time":"2021-01-15T19:10:06+00:00","remoteAddr":"","user":"--","app":"files_antivirus","method":"","url":"--","message":{"Exception":"RuntimeException","Message":"The antivirus executable could not be found at /usr/bin/clamscan","Code":0,"Trace":[{"function":"__construct","class":"OCA\\Files_Antivirus\\Scanner\\LocalClam","type":"->","args":[{"__class__":"OCA\\Files_Antivirus\\AppConfig"},{"__class__":"OC\\AppFramework\\Logger"},{"__class__":"OCA\\Files_Antivirus\\StatusFactory"}]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":84,"function":"newInstanceArgs","class":"ReflectionClass","type":"->","args":[[{"__class__":"OCA\\Files_Antivirus\\AppConfig"},{"__class__":"OC\\AppFramework\\Logger"},{"__class__":"OCA\\Files_Antivirus\\StatusFactory"}]]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":101,"function":"buildClass","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->","args":[{"name":"OCA\\Files_Antivirus\\Scanner\\LocalClam","__class__":"ReflectionClass"}]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":116,"function":"resolve","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->","args":["OCA\\Files_Antivirus\\Scanner\\LocalClam"]},{"file":"/var/www/nextcloud/lib/private/AppFramework/DependencyInjection/DIContainer.php","line":414,"function":"query","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->","args":["OCA\\Files_Antivirus\\Scanner\\LocalClam"]},{"file":"/var/www/nextcloud/lib/private/ServerContainer.php","line":133,"function":"queryNoFallback","class":"OC\\AppFramework\\DependencyInjection\\DIContainer","type":"->","args":["OCA\\Files_Antivirus\\Scanner\\LocalClam"]},{"file":"/var/www/nextcloud/apps/files_antivirus/lib/Scanner/ScannerFactory.php","line":45,"function":"query","class":"OC\\ServerContainer","type":"->","args":["OCA\\Files_Antivirus\\Scanner\\LocalClam"]},{"file":"/var/www/nextcloud/apps/files_antivirus/lib/BackgroundJob/BackgroundScanner.php","line":334,"function":"getScanner","class":"OCA\\Files_Antivirus\\Scanner\\ScannerFactory","type":"->","args":[]},{"file":"/var/www/nextcloud/apps/files_antivirus/lib/BackgroundJob/BackgroundScanner.php","line":121,"function":"scanOneFile","class":"OCA\\Files_Antivirus\\BackgroundJob\\BackgroundScanner","type":"->","args":[{"__class__":"OC\\Files\\Node\\File"}]},{"file":"/var/www/nextcloud/lib/private/BackgroundJob/Job.php","line":62,"function":"run","class":"OCA\\Files_Antivirus\\BackgroundJob\\BackgroundScanner","type":"->","args":[null]},{"file":"/var/www/nextcloud/lib/private/BackgroundJob/TimedJob.php","line":57,"function":"execute","class":"OC\\BackgroundJob\\Job","type":"->","args":[{"__class__":"OC\\BackgroundJob\\JobList"},{"__class__":"OC\\Log"}]},{"file":"/var/www/nextcloud/cron.php","line":126,"function":"execute","class":"OC\\BackgroundJob\\TimedJob","type":"->","args":[{"__class__":"OC\\BackgroundJob\\JobList"},{"__class__":"OC\\Log"}]}],"File":"/var/www/nextcloud/apps/files_antivirus/lib/Scanner/LocalClam.php","Line":43,"CustomMessage":"--"},"userAgent":"--","version":"19.0.5.2"}
{"reqId":"8t1Be8cvrQgMzsdO0hWA","level":3,"time":"2021-01-15T19:10:06+00:00","remoteAddr":"","user":"--","app":"files_antivirus","method":"","url":"--","message":{"Exception":"RuntimeException","Message":"The antivirus executable could not be found at /usr/bin/clamscan","Code":0,"Trace":[{"function":"__construct","class":"OCA\\Files_Antivirus\\Scanner\\LocalClam","type":"->","args":[{"__class__":"OCA\\Files_Antivirus\\AppConfig"},{"__class__":"OC\\AppFramework\\Logger"},{"__class__":"OCA\\Files_Antivirus\\StatusFactory"}]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":84,"function":"newInstanceArgs","class":"ReflectionClass","type":"->","args":[[{"__class__":"OCA\\Files_Antivirus\\AppConfig"},{"__class__":"OC\\AppFramework\\Logger"},{"__class__":"OCA\\Files_Antivirus\\StatusFactory"}]]},{"file":"/var/www/nextcloud/lib/pr^C