Today found out one of the customer’s Zen Cart apps getting blank page and there’s no error found from Apache error_log.
To understand the detailed error generated from Zen Cart, you may use the built in debugging tool by Zen Cart.
1. Go to the cache folder from your Zen Cart.
2. Find the file named ‘myDebug-xxxxx.log’ file as xxxxx is the numbers.
Now, you may troubleshoot the problem from Zen Cart.