id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
18986	Improve error message for broken CSS in CachedStaticFilesStorage	Aymeric Augustin	Aymeric Augustin	"When a CSS file references a non-existing image, `CachedStaticFilesStorage` raises an exception — which is the right thing to do at this point (see #18958).

But the backtrace doesn't tell which file contains the error. As a consequence, when switching a large project to `CachedStaticFilesStorage`, these errors are difficult to locate and fix.

To improve this situation, we could change the output to show the name of each file before processing it:
{{{
Processing file xxx… DONE
Processing file xxx… FAIL
}}}

The goal is to make available all the information that could be useful for debugging, not to change the implementation of `CachedStaticFilesStorage`."	Cleanup/optimization	closed	contrib.staticfiles	1.4	Normal	fixed		Sébastien Fievet	Accepted	1	0	0	1	0	0