Apache 2 Not Working
If Apache did not properly restart, you'll likely be able to gain more insight from reviewing your Apache error logs. By default, these logs are typically located in the following directories:
You can use this command to view the most recent entries in real-time (replace this path with the location of your error log file):
sudo tail -f /var/log/apache2/error.log
While the Apache logs are a great resource when troubleshooting issues with your web server, they're sometimes difficult to decipher. This document on Apache's website can help you read entries from your log files, and it also describes how to configure Apache's various logging capabilities.