500 Server Error when setting up Collabora

Get the following error when hitting ‘save’ after inputting my colloabora URL:

[core] Error: OCP\Files\NotPermittedException: at <>

  1. /config/www/nextcloud/lib/private/Files/SimpleFS/SimpleFile.php line 106
    OC\Files\Node\File->putContent("{“convert-to” … }")
  2. /config/www/nextcloud/apps/richdocuments/lib/Service/CapabilitiesService.php line 73
    OC\Files\SimpleFS\SimpleFile->putContent("{“convert-to” … }")
  3. /config/www/nextcloud/apps/richdocuments/lib/Backgroundjobs/ObtainCapabilities.php line 46
    OCA\Richdocuments\Service\CapabilitiesService->refretch()
  4. /config/www/nextcloud/lib/private/BackgroundJob/Job.php line 61
    OCA\Richdocuments\Backgroundjobs\ObtainCapabilities->run(null)
  5. /config/www/nextcloud/lib/private/BackgroundJob/TimedJob.php line 55
    OC\BackgroundJob\Job->execute(OC\BackgroundJob\JobList {}, OC\Log {})
  6. /config/www/nextcloud/cron.php line 123
    OC\BackgroundJob\TimedJob->execute(OC\BackgroundJob\JobList {}, OC\Log {})

at 2019-05-10T17:15:02+00:00