Set config.active_storage.variant_processor = :disabled in all environments.

config/environments/development.rb

@@ -30,6 +30,7 @@
 
   # Store uploaded files on the local file system (see config/storage.yml for options).
   config.active_storage.service = :local
+  config.active_storage.variant_processor = :disabled
 
   # Don't care if the mailer can't send.
   config.action_mailer.raise_delivery_errors = false

config/environments/production.rb

@@ -22,6 +22,7 @@
 
   # Store uploaded files on the local file system (see config/storage.yml for options).
   config.active_storage.service = :local
+  config.active_storage.variant_processor = :disabled
 
   # Assume all access to the app is happening through a SSL-terminating reverse proxy.
   # config.assume_ssl = true

config/environments/test.rb

@@ -32,6 +32,7 @@
 
   # Store uploaded files on the local file system in a temporary directory.
   config.active_storage.service = :test
+  config.active_storage.variant_processor = :disabled
 
   # Tell Action Mailer not to deliver emails to the real world.
   # The :test delivery method accumulates sent emails in the