chmod -R minecraft+surge servers

chmod: invalid mode: ‘minecraft+surge’

sudo groupadd servermanagers
sudo usermod -aG servermanagers minecraft
sudo usermod -aG servermanagers surge
sudo chown -R :servermanagers servers/
sudo chmod 755 servers/

sudo setfacl -Rm u:minecraft:rwx servers/
sudo setfacl -Rm u:surge:rwx servers/
sudo getfacl -a servers/ | sudo setfacl -d -M- servers/