What version of PHP is running on your server? Has it been upgraded recently?
Have you tried clearing then site cache?
I just tried it with PHP 5.6 and that seems to have resolved it. But that does present another problem if Archivist is not compatible with v7+.
Can anyone confirm this?
I believe PHP 7.2 was added fairly recently but beyond that I'm not sure what other server upgrades may have happened recently. And yes, I did empty the cache folder.
[ed. note: todd.b last edited this post 3 years, 7 months ago.]
It's possible that I'm wrong about using PHP 7.1. The System Info screen in my Manager comes up blank (net::ERR_ABORTED).