I'm looking for advice on best practices on how to debug the routing of Magento 1.9.x efficiently.
We're running into a strange issue here where we push a Mage 18.104.22.168 install from our local dev stage to prod stage and one particular custom module throws a 404 error. Everything else works just fine on the prod server.
The entire install works perfectly (incl. this one custom module) on our local dev stage, which is a clone of the prod server (Nginx, PHP 5.6.30, MySQL).
We've cleared all caches, re-indexed all data and triple checked the code was pushed correctly to the prod stage.
So now we need to debug the routing of the prod stage Magento 1.9.x since the 404 error page does not contain any useful debugging information...
Any advice on how this can be done efficiently ?
Thank you !