One or more database tables are unavailable. The database may need to be repaired.

To allow use of this page to automatically repair database problems, please add the following line to your wp-config.php file. Once this line is added to your config, reload this page.

define('WP_ALLOW_REPAIR', true);

Check secret keys

While you are editing your wp-config.php file, take a moment to make sure you have all 8 keys and that they are unique. You can generate these using the WordPress.org secret key service.

 

/wp-admin/maint/repair.php?referrer=is_blog_installed

https://www.examble.com/wp-admin/maint/repair.php?referrer=is_blog_installed