PHP Fatal error: Call to undefined method after uploading on the web
<p>I have some pages, which work fine locally(using WAMP and error_reporting E_ALL in php.ini), but once I upload them, I get the following error:
Fatal error: Call to undefined method DB::exists()
The method is there, and I don't know why it can't be seen.</p>

<p>Do you have an idea what went wrong?</p>
