Error in libraryphp

Hi,

I´ve got an error on my homepage (www.bv21.de):

Undefined offset: -1 in /html/wordpress/wp-content/themes/sport/inc/library.php on line 373

Does anyone know this error?

For example this site (http://www.bv21.de/?page_id=4601) is available

Hi!
I've visited your website, however, no error is showed there. When you get this error message?

Hi,

I've solved this error by replacing the content of the theme.

I hope this works for a longer time ;-)

Hi,

I thought I've solved the problem, but now there are a lot more errors. Can you check my homepage and give me a solution?

Hi!

You would better update the theme to get rid of these notices. Lots of changes has been made in the latest version.

I've updatet the theme and now everything works fine. Thank you!