No route matches [GET] "/assets/bootstrap.css.map"

Question

I'm running on rails4, bootstrap 3 and I get the following error message in my terminal.

Started GET "/assets/bootstrap.css.map" for 127.0.0.1 at 2014-08-24 23:41:36 -0700

ActionController::RoutingError (No route matches [GET] "/assets/bootstrap.css.map"):
  actionpack (4.1.4) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
  actionpack (4.1.4) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'


railties (4.1.4) lib/rails/rack/logger.rb:38:in `call_app'
  railties (4.1.4) lib/rails/rack/logger.rb:20:in `block in call'
  activesupport (4.1.4) lib/active_support/tagged_logging.rb:68:in `block in tagged'
  activesupport (4.1.4) lib/active_support/tagged_logging.rb:26:in `tagged'
  activesupport (4.1.4) lib/active_support/tagged_logging.rb:68:in `tagged'
  railties (4.1.4) lib/rails/rack/logger.rb:20:in `call'
  actionpack (4.1.4) lib/action_dispatch/middleware/request_id.rb:21:in `call'
  rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
  rack (1.5.2) lib/rack/runtime.rb:17:in `call'
  activesupport (4.1.4) lib/active_support/cache/strategy/local_cache_middleware.rb:26:in `call'
  rack (1.5.2) lib/rack/lock.rb:17:in `call'
  actionpack (4.1.4) lib/action_dispatch/middleware/static.rb:64:in `call'
  rack (1.5.2) lib/rack/sendfile.rb:112:in `call'
  railties (4.1.4) lib/rails/engine.rb:514:in `call'
  railties (4.1.4) lib/rails/application.rb:144:in `call'
  rack (1.5.2) lib/rack/lock.rb:17:in `call'
  rack (1.5.2) lib/rack/content_length.rb:14:in `call'
  rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service'

Anyone have any ideas how to get rid of this?

EDIT:

This is my application.css

*= require_tree .
*= require_self
*= require_ladda-themeless
*= require login_form
*= require bootstrap
*/

Could you post your layout file and your application.css(.scss)? Where did you placed the bootstrap files? — Victor, Aug 25 '14 at 06:59
No... I've never seen it included in other people's apps. @Victor, my bootstrap files (bootstrap.js, bootstrap.min.js, bootstrap.css, bootstrap.min.css) are included in app/assets/javascripts, app/assets/stylesheets respectively. — kchoi, Aug 25 '14 at 07:08

score 46 · Answer 1 · edited May 23 '17 at 12:03

46

The file that requests the bootstrap.css.map is:

/vendor/assets/stylesheets/bootstrap.css

And removing this last line should fix the problem:

/*# sourceMappingURL=bootstrap.css.map */

See here what are map files used for.

edited May 23 '17 at 12:03

Community

1
1

answered May 05 '16 at 19:36

Bruno Peres

2,980
1
21
19

You could also just extract the appropriate file from [the bootstrap download](http://getbootstrap.com/docs/3.3/getting-started/#download). – Niek Sep 10 '17 at 14:21

score 8 · Answer 2 · edited May 23 '17 at 11:47

I had the same problem and found this short answer on SO. From what I understand the map files are an aid to debugging tools in the browser. Quick fix is to find where this map file is included, by issuing a command line find.

find . -name "*.css" -o -name "*.scss" | xargs grep 'sourceMappingURL=bootstrap.css.map'

Then either delete the line from your css file or move it to where it will be looking for it.

score 5 · Answer 3 · answered Aug 25 '14 at 07:22

Ok, so instead of having native bootstrap files under the app/assets folder, I just created custom.css.scss under app/assets/stylesheets and included @import "bootstrap"; Then, I removed all the bootstrap files from app/assets folder which solved the problem.

score -1 · Answer 4 · answered Jun 13 '17 at 11:42

-1

my error: ActionController::RoutingError (No route matches [GET] "/assets/bootstrap.min.css.map"):

I created an empty bootstrap.min.css.map in assets folder, the error stopped.

answered Jun 13 '17 at 11:42

Saiprakash Holi

41
9

No route matches [GET] "/assets/bootstrap.css.map"

4 Answers4