Updating My WordPress Broke A lot of my Plugins

This the error i receive when I open up my website. https://www.handhelper.com. The site worked fine before I updated it.

Notice: wpdb::escape is deprecated since version 3.6.0! Use wpdb::prepare() or esc_sql() instead. in /hsphere/local/home/herman2p/handhelper.com/wp-includes/functions.php on line 3839

Fatal error: Uncaught Error: Call to undefined function mysql_error() in /hsphere/local/home/herman2p/handhelper.com/wp-content/plugins/revslider/inc_php/db.class.php:29 Stack trace: #0 /hsphere/local/home/herman2p/handhelper.com/wp-content/plugins/revslider/inc_php/db.class.php(124): UniteDBRev->checkForErrors(‘fetch’) #1 /hsphere/local/home/herman2p/handhelper.com/wp-content/plugins/revslider/inc_php/db.class.php(134): UniteDBRev->fetch(‘advthr_revslide…’, ‘alias=’test-sli…’, ”, ”, ”) #2 /hsphere/local/home/herman2p/handhelper.com/wp-content/plugins/revslider/inc_php/revslider_slider.class.php(73): UniteDBRev->fetchSingle(‘advthr_revslide…’, ‘alias=’test-sli…’) #3 /hsphere/local/home/herman2p/handhelper.com/wp-content/plugins/revslider/inc_php/revslider_slider.class.php(100): RevSlider->initByAlias(‘test-slider’) #4 /hsphere/local/home/herman2p/handhelper.com/wp-content/plugins/revslider/inc_php/revslider_output.class.php(840): RevSlider->initByMixed(‘test-slider’) #5 /hsphere/local/home/herman2p/handhelper.c in /hsphere/local/home/herman2p/handhelper.com/wp-content/plugins/revslider/inc_php/db.class.php on line 29

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