Issue Opening system\core/Loader.php PHP 7.4.10

Hey Everyone,

I've been trying to update PHP to 7.4.10 and I've been running into some issues loading the application.
The one thing that seems to fix the issue is adding a PHP closing tag.
Has anyone else encountered this?

Server info:
IIS 10.5 
Fast CGI enabled




Here's the errors provided:

A PHP Error was encountered
Severity: Warning
Message: require_once(X:\root\Onboarding\system\core/Loader.php): failed to open stream: No such file or directory
Filename: core/Common.php
Line Number: 163
Backtrace:
File: X:\root\Onboarding\application\controllers\Page.php
Line: 17
Function: __construct
File: X:\root\Onboarding\index.php
Line: 343
Function: require_once


Fatal error: require_once(): Failed opening required 'X:\www\Onboarding\system\core/Loader.php' (include_path='.;Y:\Program Files\PHP\v7.4\pear') in X:\www\Onboarding\system\core\Common.php on line 163

A PHP Error was encountered
Severity: Compile Error
Message: require_once(): Failed opening required 'X:\www\Onboarding\system\core/Loader.php' (include_path='.;Y:\Program Files\PHP\v7.4\pear')
Filename: core/Common.php
Line Number: 163
Backtrace: