Error "mode maintenance" nextcloud 14.0

We are a small organization that uses nextcloud to perform backups of certain tasks. since two days ago it does not allow us to access.
Abjunto problem:
“maintenance mode” when making change in “occ maintenance: mode --off” gives us the possibility to “update to nextcloud 14.0.5” does not update. returns the “maintenance mode”

help us please!

Miguel q.
Santiago, Chile

translation made by google translate!

ya solucioné este problema.
es necesario editar archivo config.php, linea:
‘installed’ => true a false.
‘maintenance’ => true a false.

Miguel Q.