This url returns 404:
http://parsoid-lb.eqiad.wikimedia.org/enwiki/Big_Blues?oldid=562876508
It shouldn't, the page and revision exist:
https://en.wikipedia.org/w/index.php?title=Big_Blues&oldid=562876508
It seems to be a problem with template, error message is:
DoesNotExistError: Template Fetch failure for Big_Blues
Version: unspecified
Severity: major