Forbidden

I am finding that, in order for this plugin to continue to function post-upgrade, you must remember to create an .htaccess file for it in the following folder:

wordpress/wp-content/plugins/pdfjs-viewer-shortcode/pdfjs/web/.htaccess

Inside this .htaccess file:

# Allow direct access to PDF viewer PHP file.

# This is required for embedded PDFs to display.

# This rule will superceed the security rule above # defined in /wp-content/.htaccess that blocks 

# direct access to PHP files.

<Files viewer.php>    

allow from all

</Files>

Then make sure Apache owns the file: sudo chown apache:apache ./.htaccess

If you don’t remember to do this, you’ll get a PDF Forbidden error after you’ve upgraded.

Maybe this .htaccess file can become part of the upgrade payload?