Slim Application Error

The application could not run because of the following error:

Details

Code: 8192
Message: mysqli_real_escape_string(): Passing null to parameter #2 ($string) of type string is deprecated
File: /home/eludevisibility/superfamicom.org/lib/Database.php
Line: 134

Trace

#0 [internal function]: Slim::handleErrors(8192, 'mysqli_real_esc...', '/home/eludevisi...', 134)
#1 /home/eludevisibility/superfamicom.org/lib/Database.php(134): mysqli_real_escape_string(Object(mysqli), NULL)
#2 /home/eludevisibility/superfamicom.org/superfamicom_model.php(246): Database->escape(NULL)
#3 /home/eludevisibility/superfamicom.org/superfamicom_model.php(221): sfc::get_total(NULL, NULL)
#4 /home/eludevisibility/superfamicom.org/index.php(229): sfc::get_pagination('22', '/game-list', 'All SNES Games', 80)
#5 /home/eludevisibility/superfamicom.org/Slim/Route.php(395): {closure}('22')
#6 /home/eludevisibility/superfamicom.org/Slim/Slim.php(1145): Slim_Route->dispatch()
#7 /home/eludevisibility/superfamicom.org/Slim/Middleware/Flash.php(84): Slim->call()
#8 /home/eludevisibility/superfamicom.org/Slim/Middleware/MethodOverride.php(91): Slim_Middleware_Flash->call()
#9 /home/eludevisibility/superfamicom.org/Slim/Middleware/PrettyExceptions.php(65): Slim_Middleware_MethodOverride->call()
#10 /home/eludevisibility/superfamicom.org/Slim/Slim.php(1097): Slim_Middleware_PrettyExceptions->call()
#11 /home/eludevisibility/superfamicom.org/index.php(1735): Slim->run()
#12 {main}