Erreur fatale avec PHP 5.3 et multilingue activé
From Joomla! Documentation
After an update to Joomla 3.7.3 the following Error occurs with PHP 5.3.29 on a multilingual site with language filter plugin enabled.
Errors reported
Fatal error: Function name must be a string in libraries/cms/router/router.php on line 639
Versions affected
General Information
This pertains only to Joomla! version(s): 3.7.3
What is the cause
How to fix
Update to PHP Version 5.4 or later.