Your problem is your .html file in the lua folders. Just search it by going to the garrysmod/lua folder, click search, click the .html file when it shows up (if it does), and put '--' in front of every typed line of code, or just delete every line and save. Don't try to delete the whole file, it will come back via a backup of file integrity. You don't need .html.
This will give you more information on what DRME is, where your malicious endpoint really leads to, and why it's not good for your computer:
https://archive.org/details/exposed-the-malicious-endpoint-.lua-error
OR