can no longer use theme, giving me a fatal error

hi, i woke up this morning with this error message when logging into the site. the site is no longer visible and it is giving me this message. i have tried to uninstall and re install the theme but keep getting the same message. please help

Warning: require_once(/home1/ohmyglob/public_html/wp-content/plugins/arcane_custom_post_types/smartmetabox/SmartMetaBox.php): failed to open stream: No such file or directory in /home1/ohmyglob/public_html/wp-content/themes/arcane/functions.php on line 14

Fatal error: require_once(): Failed opening required ‘/home1/ohmyglob/public_html/wp-content/plugins/arcane_custom_post_types/smartmetabox/SmartMetaBox.php’ (include_path=’.:/opt/php71/lib/php’) in /home1/ohmyglob/public_html/wp-content/themes/arcane/functions.php on line 14