I’m trying to get Piwik-2.1.0 running on a hand-configured PHP-5.5.10 install (as an alternative PHP setup next to the pre-configured PHP-5.3 that comes with Plesk).
I have configured PHP-5.5.10 with following options:
./configure --prefix /usr/local/lib/php-5.5.10 --with-xsl --with-pdo-mysql --with-mysqli --with-mysql
Yet, my Piwik index page reports following error:
The following error just broke Piwik (v2.1.0): Call to undefined function twig_lower_filter()
Does this indicate a missing PHP extension? Any advice on how this can be solved is much appreciated!