Rails LoadError: cannot load such file — action_view/template/error

Question

I've just setup a simple rails application, with Devise and some contents pages (basically simple html). Everything works, but after few minutes the server start responding with this at each request:

Completed 500 Internal Server Error in 4.2ms

LoadError (cannot load such file -- action_view/template/error):
app/middleware/catch_json_parse_errors.rb:8:in `call'

If I restart the server, then everything works for some minutes, then the problem come back again.

I'm using ruby 2.0.0-p353, rails 3.2.16, and Thin as web server. I'm launching the server in development mode and without precompiling assets.

Answer 1

It seems Thin catches a broken JSON object. You may want to take a look at this link. http://robots.thoughtbot.com/catching-json-parse-errors-with-custom-middleware