Installation, updates

I got this message

Fatal error : Cannot redeclare boutons_plugins() (previously declared in /home/www/685d60b96ec102795b7b46d84ead3c78/web/tmp/charger_plugins_options.php:5) in /home/www/685d60b96ec102795b7b46d84ead3c78/web/tmp/charger_plugins_options.php on line 12

but I dont´know how to fix it,
could U help me
thanks
Alma