Can you please try to upgrade to 2.4.0-beta2? I think this bug may be fixed: http://piwik.org/faq/how-to-update/faq_159/

No, it's not fixed. Just upgraded to 2.4.0-beta2, and it's still giving:

Failed to load HTML file: Please check your server configuration. You may want to whitelist "*.html" files from the "plugins" directory. The HTTP status code is 404 for URL "plugins/Feedback/angularjs/ratefeature/ratefeature.html"

Looking at the perms for the dir's up to there, they're all 755 so it's not a perms issue.

Ideas?

As a data point, this web server is using nginx not Apache. No idea if that has any effect for this bug.

There can me multiple reasons, for instance:

• You are using PageSpeed
• You are maybe using piwik-nginx and haven't updated see changes: matomo-org/matomo-nginx@90d1f84 and matomo-org/matomo-nginx@08e3b08
• You are not using piwik-nginx but still haven't blocked html files
• ...

HTML files weren't used in previous versions

See also #5266 Serve HTML files as text/html mime type, on Apache2 web server

Your Piwik server should be able to serve HTML files.

Try to open the file: plugins/Feedback/angularjs/ratefeature/ratefeature.html

from your piwik server. What is logged in your nginx error log?

Our solution was to migrate off Piwik.

There is no excuse for an auto-update to break the primary purpose of the software, ever.

Closing the ticket (multiple times) without confirming things are fixed didn't help either.

There is no excuse for an auto-update to break the primary purpose of the software, ever.

Wrong, it did not break the primary purpose of the software, it simply displayed a notice message explaining your webserver does not serve HTML files.

We close the ticket multiple times because you did NOT search before creating your ticket. There was multiple duplicate tickets. So bye bye

Truly, I did search. Truly nothing showed up. (Trac is lousy)

Your software should check before auto-updating if this problem could happen before people are bitten by it.

Also, don't be a dickhead to your (now-ex) users.

Truly, I did search. Truly nothing showed up. (Trac is lousy)

Ok, that's a good excuse :-) We are planning to migrate to Github issues, see ticket #5273