403 error for js files in vendor directory on Heroku

Question

My CakePHP v3.x app runs fine in my local Vagrant environment, but when I deploy to Heroku, I get 403 errors for all javascript files located in /webroot/vendor/...

CSS and javascript files outside that directory load fine.

https://example.com/js/i_load_fine.js
https://example.com/vendor/i_cause_403_error.js

/Procfile

web: vendor/bin/heroku-php-apache2

This question sounds similar, but I checked and .htaccess already has the recommended RewriteCond:

<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^ index.php [L]
</IfModule>

Answer 1

I wonder if "vendor" is a reserved word in Heroku?

yes, if you will be use "vendor" folder name, may be error 403 errors. Because root dir web server vendor/bin/ . Don't use public name "vendor" and "bin".

Answer 2

For what it's worth, I just saw the same issue (had a "vendor" folder that kept getting 403 errors).

I renamed the vendor folder to "v" (and fixed references) and everything worked just fine.

I wonder if "vendor" is a reserved word in Heroku?