Can't change mamp ports on Mac

Question

I recently switched from xampp to mamp because of issues with xampp. I'm trying to change my ports on mamp but when I click Set Web & MySQL ports to 80 & 3306 I get and error reading

There is a problem with the server ports. Each server must be assigned a unique port. Please check your configuration.

I am pretty sure the reason this is doing this is because of my uninstalled xampp. I've searched the web for a solution but can't find anything. Any help would be great, thanks

Answer 1

The issue was with the nginx port. I set the Nginx port to 81 instead of 80 and it fixed it.