I have installed Drupal from using build-in scripts on runcloud.io, but I have noticed that Drush is not available. They have replied:
Sorry, it is not possible to install drush into Runcloud. Because the installation leads to php crash as it will erase cerain php modules
I get used to using Drush, especially when Drupal 8 website encountered an unexpected error, without this option I don't see the way how to clear the cache without UI, restore from backup etc.
Are there any other options to rebuild caches without Drush to recover the website from an unexpected error?