[Plugin: BuddyPress Classifieds] I am having an error message when installing

The following is an error message in “Classified Maps”

Warning: array_key_exists() expects parameter 2 to be array, boolean given in /wp-content/plugins/buddypress-classifieds/bp-classifieds.php on line 1619

Line in 1616-1623
function classifieds_plugin_is_active($file,$sitewide=true) {
if ($sitewide){
$plugins = get_site_option( ‘active_sitewide_plugins’ );
if ( array_key_exists( $file , $plugins ) ) return true;
}else{
$plugins = get_option(‘active_plugins’);
if ( in_array( $file , $plugins ) ) return true;
}
}

LINE 1619: if ( array_key_exists( $file , $plugins ) ) return true;

Can someone help me in this area?