Error Message on top of site – all pages

Hi – I’m getting these error messages on my website and don’t know how to fix it; I’ve deactivated all my plug-ins but that didn’t fix it:

Warning: include(api.php) [function.include]: failed to open stream: No such file or directory in /data/22/2/135/92/2787255/user/3066635/htdocs/WordPress/wp-content/themes/theme1497/functions.php on line 2

Warning: include(api.php) [function.include]: failed to open stream: No such file or directory in /data/22/2/135/92/2787255/user/3066635/htdocs/WordPress/wp-content/themes/theme1497/functions.php on line 2

Warning: include() [function.include]: Failed opening ‘api.php’ for inclusion (include_path=’.:/usr/share/php:/usr/services/vux/lib/php’) in /data/22/2/135/92/2787255/user/3066635/htdocs/WordPress/wp-content/themes/theme1497/functions.php on line 2

Can someone please help?