Error message after Syndicating feed

Awesome plugin! Saving lots of work!
While it’s not affecting the plugin functionality itself, I keep getting this error (both localhost and a live environment):

Warning: array_map(): Argument #2 should be an array in \wp-content\plugins\cybersyn\cybersyn-syndicator.php on line 146

It appears on the RSS/Atom Syndicator page after a feed has been initially saved. How can I fix? Thanks!