We recently upgraded our Phabricator installation after a few months to commit b1f64d93566f172af4a60151ac4afa540f4017fa.

We used the update_phabricator.sh script from the docs. There were a couple of schema errors during the migrations and I basically deleted the columns because upon searching here I found some commits where those columns had been removed, not sure if that's related to this task.

Searching for anything now results in

Unhandled Exception ("AphrontQueryException")
#145: Table './phabricator_search/search_documentfield' is marked as crashed and should be repaired