maybe this fixes it

Author: lodewiges

config/application.rb

@@ -6,6 +6,9 @@
 # you've limited to :test, :development, or :production.
 Bundler.require(*Rails.groups)
 
+# Ensure connection_pool 3.x compatibility for early cache store setup
+require_relative 'initializers/connection_pool_compat'
+
 module Sofia
   class Application < Rails::Application
     # Initialize configuration defaults for originally generated Rails version.