update deps

config/environments/test.rb

@@ -30,7 +30,7 @@ Rails.application.configure do
   config.cache_store = :null_store
 
   # Raise exceptions instead of rendering exception templates.
-  config.action_dispatch.show_exceptions = false
+  config.action_dispatch.show_exceptions = :none
 
   # Disable request forgery protection in test environment.
   config.action_controller.allow_forgery_protection = false

config/shakapacker.yml

@@ -19,7 +19,7 @@ development:
   compiler_strategy: mtime
 
   dev_server:
-    https: false
+    server: 'http'
     host: localhost
     port: 3035
     hmr: false