Found a bug and what is causing it

Hello,

I found a bug and what is causing it.

Create a new post with Cyrillic title on it, the permalink will be Cyrillic as well, automatically created. It means it will include %4%4587%49%574358 etc as that is how web interprets Cyrillic in the URLs.

Hit publish or update and the result is this:

Warning: Invalid argument supplied for foreach() in /home/XXX/public_html/wp-content/plugins/pretty-link/pro/app/models/PlpKeyword.php on line 201

Warning: Cannot modify header information – headers already sent by (output started at /home/XXX/public_html/wp-content/plugins/pretty-link/pro/app/models/PlpKeyword.php:201) in /home/XXX/public_html/wp-includes/pluggable.php on line 1219

It is happening, I believe, because of the “%” signs used to write down Cyrillic alphabets in the URLs and it is confusing the extension.