Error on the Feed page.

When I click on the read more button of the homepage feed "bx_get_style([]); bx_get_style([]); bx_get_style([]); bx_get_style(["https:\/\/domain.name\/modules\/boonex\/ads\/template\/css\/timeline.css?rev=59"]);" is displayed at the bottom of the post. How to fix it and how to make the excerpt display on the homepage feed instead of full text?