Getting an intermittent 500 (Internal Server Error)
e.g. https://www.ukclimbing.com/logbook/crags/wilton_2-329/falling_crack-17198
I get the same intermittently all over the forum. Normally goes away after a page refresh or two.
I've been having them a bit recently as well.
It's usually a sign the site is getting aggressively scraped by some unscrupulous BOTs at that time. I'll check the logs to see if I can spot a pattern to block them.