I have this error on my site after I moved it from a shared hosting to a VPS (both with cPanel).
PHP Warning: include(): Failed opening '../../../transporturi/a.php' for inclusion (include_path='.:/opt/cpanel/ea-php70/root/usr/share/pear') in [...] on line 36.
In the other file on line 36 I have included a PHP file, I checked the path and it's there. I also tried to switch PHP version from the WHM from 5.5 to 5.6 to 7.0, but no luck.