Weblogin not working after migrating from old server

Is there a way to figure out what is wrong, because in log file I cannot see anything special?
Or I missed something? (debug log is enabled, no 3rd party apps):

   {"reqId":"ksgoJnAqVvvmQHppvNdl","level":0,"time":"2020-03-02T08:45:50+00:00","remoteAddr":"193.104.134.7","user":"--","app":"core","method":"GET","url":"/apps/files/","message":{"Exception":"OC\\AppFramework\\Middleware\\Security\\Exceptions\\NotLoggedInException","Message":"Current user is not logged in","Code":401,"Trace":[{"file":"/usr/share/webapps/nextcloud/lib/private/AppFramework/Middleware/MiddlewareDispatcher.php","line":97,"function":"beforeController","class":"OC\\AppFramework\\Middleware\\Security\\SecurityMiddleware","type":"->","args":[{"__class__":"OCA\\Files\\Controller\\ViewController"},"index"]},{"file":"/usr/share/webapps/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":97,"function":"beforeController","class":"OC\\AppFramework\\Middleware\\MiddlewareDispatcher","type":"->","args":[{"__class__":"OCA\\Files\\Controller\\ViewController"},"index"]},{"file":"/usr/share/webapps/nextcloud/lib/private/AppFramework/App.php","line":125,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Files\\Controller\\ViewController"},"index"]},{"file":"/usr/share/webapps/nextcloud/lib/private/AppFramework/Routing/RouteActionHandler.php","line":47,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Files\\Controller\\ViewController","index",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"files.view.index"}]},{"function":"__invoke","class":"OC\\AppFramework\\Routing\\RouteActionHandler","type":"->","args":[{"_route":"files.view.index"}]},{"file":"/usr/share/webapps/nextcloud/lib/private/Route/Router.php","line":299,"function":"call_user_func","args":[{"__class__":"OC\\AppFramework\\Routing\\RouteActionHandler"},{"_route":"files.view.index"}]},{"file":"/usr/share/webapps/nextcloud/lib/base.php","line":1008,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/apps/files/"]},{"file":"/usr/share/webapps/nextcloud/index.php","line":38,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/usr/share/webapps/nextcloud/lib/private/AppFramework/Middleware/Security/SecurityMiddleware.php","Line":142,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.122 Safari/537.36","version":"18.0.1.3"}
    {"reqId":"TL7nT6SvHy9sZFTANob9","level":0,"time":"2020-03-02T08:45:50+00:00","remoteAddr":"blabla","user":"--","app":"cron","method":"GET","url":"/cron.php","message":"Run OCA\\NextcloudAnnouncements\\Cron\\Crawler job with ID 3","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.122 Safari/537.36","version":"18.0.1.3"}
    {"reqId":"TL7nT6SvHy9sZFTANob9","level":0,"time":"2020-03-02T08:45:51+00:00","remoteAddr":"193.104.134.7","user":"--","app":"cron","method":"GET","url":"/cron.php","message":"Finished OCA\\NextcloudAnnouncements\\Cron\\Crawler job with ID 3 in 1 seconds","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.122 Safari/537.36","version":"18.0.1.3"}

Here is the story…I switched to new hardware and new fresh Arch linux installation. First migration was done in NC 17-something, MariaDB was imported without any problems, but since PHP 7.4 had an issue, I waited for new version NC 18 but problem still remains.

I also repeated the migration directly on NC 18 and still no luck.

Iphone app work with no problem, but I cannot login via web. Normal procedure is to disable 3rd party apps, but in this version I don’ have any.
I also tried clean install without my data and the problem is the same.

Environment: php-fpm + nginx