When loading https://babo.no it tries to load this file (witch 404s):

https://dawnthemes.com/ticketbox/wp-content/uploads/2016/12/events-category-bg-dark.jpg?id=893

Failed to load resource: the server responded with a status of 404 (Not Found)

This slowes down page load time. I dont know why this image tries to load. Something in the theme? Thanks in advance!