Error after latest update

There is an error I get after latest update:

[error] 903#903: *273 FastCGI sent in stderr: "PHP message: PHP Fatal error: Uncaught Error: Call to undefined method Illuminate\Foundation\Application::configureMonologUsing() in>

Stack trace:

#0 /var/www/html/crm/public/index.php(34): require_once()

#1 {main}

Please help.

UPDATE: restored to the 5.3.17

BUG: The iOS app doesn’t see/update the status in the invoices section.

@david any thoughts?

Are other changes reflected in the iOS app?