I have a WP installed in http://dev1.aleconomico.org.br/loja/
As you can see, it is still in development and will be moved to http://aleconomico.org.br/loja/ once it is all set up. It was working fine until June 11th, and I can’t really tell what date exactly it was updated to 4.8.
The thing is that today it’s returning a 500 Internal Server Error, both frontend and backend. Things I know or tried are:
1. The main site is on 4.8 and is running fine. It has a different theme and different plugins.
2. I tried changing the plugin directory name as to deactivate them and the error persisted.
3. I tried changing the theme directory name (the one specific to the theme installed) and the error persisted.
4. I tried increasing the memory limit both uploading a php.ini file and defining WP_MEMORY_LIMIT and the error persisted.
5. I tried adding an .htaccess file (unmodified WP default commands) to the root of the subdomain directory, and the error persisted.
6. I tried renaming the .htaccess file in the /loja/ subdirectory (as to hide it), and the 500 error was fixed. However, the page was loaded all messy with elements spread out across the entire page. This is understandable since WP could no longer know that the installation was in the /loja/ directory. So this is not a permanent fix.
7. The error_log files (in both /loja/ and /loja/wp-admin/) do not have recorded errors from when the 500 error is returned, but I learned that some plugins are using deprecated functions and notices were recorded, particularly “Automatically populating $HTTP_RAW_POST_DATA is deprecated” until June 11th.
So this is all I know. My main suspicions are that (a) something in 4.8 was changed in the way subdirectory and/or subdomain installations work, or (b) $HTTP_RAW_POST_DATA was finally removed, although that shouldn’t return a 500 error I believe.
I would greatly appreciate any help, as I don’t know where else to look.
