Sql Database Connecting Error

Check your system logs to see why (if) the MySQL server crashed. You may need to add more resources to handle 3000 simultaneous users. (This is a good problem to have!)

Further info:

You’ve been hacked and are serving malware. See https://sitecheck.sucuri.net/results/hdmoviesfree.net/

Get a fresh cup of coffee, take a deep breath and carefully follow this guide. When you’re done, you may want to implement some (if not all) of the recommended security measures.

If you’re unable to clean your site(s) successfully, there are reputable organizations that can clean your sites for you. Sucuri and Wordfence are a couple.