Suddenly my search box stopped working. Previously, it would return previews of all matches. Now, no matter what you type, it displays a spinning wheel and then returns "No match was found"
Thinking I would fix the problem, I went to the trouble of installing the Extension:SphinxSearch, which requires also installing and configuring Sphinx. The search now returns all sorts of stuff, but I still get the No match was found and spinning wheel, making it appear that the search isn't working.
What do I look for to resolve this problem? I'm not seeing any errors in the console.
Site: wiki.vvfh.org
OS: FreeBSD 10.3
MediaWiki 1.29.1, PHP 7.1.10, MySQL 5.6.37