Getting an error after Install

Hello,

I just installed this plugin. My WordPress is a Multisite/Network. Please have a look into it.

in_array() expects parameter 2 to be array, boolean given in /home/techjunk/public_html/wp-content/plugins/wp-ultimate-search/views/wpus-options.php on line 44

Please have a look into it.

https://ww.wp.xz.cn/plugins/wp-ultimate-search/