That error often indicates a problem with a specific browser and / or internet connection. Have you tried viewing the events using a different browser?
If that doesn’t help, can you test with all other plugins deactivated and while running the default WordPress theme?
Tanks for your response caimin_nwl
I’ve tried it on Chrome, Firefox, Safari and on devices.
If I upload a new event, it also disables the current event pages, and they all return the error message.
No other pages on the site are experiencing this problem, which makes me think it’s related to the plugin.
http://ing-media.com/events/
I can’t really test the live site unfortunately. I’ve just spent about £4K apparently having these issues fixed, the developer is scratching his head.
can you try to enable wp_debug or check your php logs to see if there’s any other error? also, not sure if this will help you but maybe you can try this articles
https://wordpress.org/support/topic/error-324-neterr_empty_response-the-server-closed-the-connection-without-se?replies=79
http://wordpress.stackexchange.com/questions/19601/pages-section-only-not-loading-after-publishing-large-number-of-pages
also, did you already tried caimin’s suggestion with regards to temporarily deactivating other plugins or reverting back to wp default theme to narrow down the problem?