Can't access admin after update Magento 2.3.1

Question

I recently updated my Magento 2.3.0 to 2.3.1, and my site works, but I when I try to go to my admin url I get a 504 error. I have tried clearing my cache, and I tried following advice to clear the values of the cookie paths in my database:

The last error I have in my error log is :AH01630: client denied by server configuration. My config.php looks right, but I'm not sure.

'Magento_Cookie' => 1,

I didn't get any errors when I updated. It still doesn't work. What should my next steps be?

EDIT: After being able to log in I was having a hard time getting to pages, because all the caches were disabled, so make sure to enable them.

Answer 1

I had the same error in earlier version. Finally it was permissions issue. Check the permissions of file system may be this is the reason