Hello, I am trying to activate revslider plugin for yatra theme. Installation was fine but when I tried activating it, I got this error message: 'Plugin could not be activated because it triggered a fatal error.' Fatal error: Uncaught Error: Call to undefined function mysql_error() in /home4/marith/public_html/wp-content/plugins/revslider/inc_php/framework/db.class.php:29 Stack trace: #0 /home4/marith/public_html/wp-content/plugins/revslider/inc_php/framework/db.class.php(127): UniteDBRev->checkForErrors('fetch') #1 /home4/marith/public_html/wp-content/plugins/revslider/inc_php/revslider_params.class.php(42): UniteDBRev->fetch('wp_revslider_se...') #2 /home4/marith/public_html/wp-content/plugins/revslider/inc_php/revslider_operations.class.php(1275): RevSliderParams->getFieldFromDB('general') #3 /home4/marith/public_html/wp-content/plugins/revslider/settings/general_settings.php(52): RevOperations::getGeneralSettingsValues() #4 /home4/marith/public_html/wp-content/plugins/revslider/inc_php/framework/base_admin.class.php(346): require('/home4/marith/p...') #5 /home4/marith/public_html/wp-content/plugins/revslider/revslider_admin.php(58): UniteBaseAdminClassRev::requireSettings('general_setting...') #6 /home4/marith/public_html/wp-c in /home4/marith/public_html/wp-content/plugins/revslider/inc_php/framework/db.class.php on line 29 Anyone can point me in the right direction?