“% 20” (white space) appears in domain

Hi, does anyone know how I can solve the following error:
GET https: //www.iteperu.com%20/wp-content/plugins/kk-star-ratings/public/css/kk-star-ratings.css? Ver = 4.1.3 net :: ERR_NAME_NOT_RESOLVED

The error is because “% 20” appears, I understand that it is a configuration issue, I check the configuration panel and apparently everything is fine. Has it happened to someone and knows how to solve it?

Link: https://www.iteperu.com/

Beforehand thank you very much.

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