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Fatal error: Cannot redeclare formatSize() (previously declared in /mnt/web512/c2/72/511204172/htdocs/STRATO-apps/wordpress_13/app/wp-includes/blocks/widget-group.php:54) in /mnt/web512/c2/72/511204172/htdocs/STRATO-apps/wordpress_13/app/wp-content/mu-plugins/secure-login.php on line 58