Steps to reproduce:

• Be not logged in
• Go to https://secure.phabricator.com/maniphest/query/advanced/
• Set the Query field to whatever
• Set Order By to Relevance
• Click Search button

Actual outcome:
Unhandled Exception ("Exception"): Query "ManiphestTaskQuery" failed to return a value from getPagingValueMap() for column "rank".
on https://secure.phabricator.com/maniphest/query/Bzof5wzrirXP/#R

Expected outcome:
Search results. :)

Upstreamed from https://phabricator.wikimedia.org/T198661