revised the exception message "Expected #{file_path} to define #{qualified_name}"

Users need to know the ultimate problem here is that AS was
trying to autoload a constant and it failed.

1 files changed, 1 insertions, 1 deletions

diff --git a/activesupport/lib/active_support/dependencies.rb b/activesupport/lib/active_support/dependencies.rb
index 45c9f0472a..d6bc95a522 100644
--- a/activesupport/lib/active_support/dependencies.rb
+++ b/activesupport/lib/active_support/dependencies.rb
@@ -487,7 +487,7 @@ module ActiveSupport #:nodoc:
           raise "Circular dependency detected while autoloading constant #{qualified_name}"
         else
           require_or_load(expanded)
-          raise LoadError, "Expected #{file_path} to define #{qualified_name}" unless from_mod.const_defined?(const_name, false)
+          raise LoadError, "Unable to autoload constant #{qualified_name}, expected #{file_path} to define it" unless from_mod.const_defined?(const_name, false)
           return from_mod.const_get(const_name)
         end
       elsif mod = autoload_module!(from_mod, const_name, qualified_name, path_suffix)