Call to undefined function twig_lower_filter() (no replies)

I just tried to upgrade to a newer version of php because a plugin had required it.

When I when from v 5.3.3 to 5.4.16 I received an error from piwik: Call to undefined function twig_lower_filter() s
refering to file public_html/p1w1k/tmp/templates_c/3d/1b/2ffb1ef9b3a46cc5f24a0ce822a1ac58d0318c44376d87da61c19a3ddd5f.php 67 using PHP 5.4.16

How can I resolve this error?

Thanks,

SR