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-rw-r--r--actionpack/lib/action_dispatch/middleware/exception_wrapper.rb3
1 files changed, 2 insertions, 1 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/exception_wrapper.rb b/actionpack/lib/action_dispatch/middleware/exception_wrapper.rb
index 982f6641bf..a8f49bd3bd 100644
--- a/actionpack/lib/action_dispatch/middleware/exception_wrapper.rb
+++ b/actionpack/lib/action_dispatch/middleware/exception_wrapper.rb
@@ -1,5 +1,6 @@
require 'action_controller/metal/exceptions'
require 'active_support/core_ext/exception'
+require 'active_support/core_ext/class/attribute_accessors'
module ActionDispatch
class ExceptionWrapper
@@ -76,4 +77,4 @@ module ActionDispatch
@backtrace_cleaner ||= @env['action_dispatch.backtrace_cleaner']
end
end
-end \ No newline at end of file
+end