Hello, I'm Wes, and I'll be assisting you today.
There seems to be another computer or device on your network using the same IP address.
Let's try to change your current IP address. One moment while i get those steps for you.
1. Choose Apple menu > System Preferences, then click Network.2. Select the network port configuration for your computer(such as Ethernet or your SSID of your WIFI network) in the list at the left.3. Click Configure, then choose Using DHCP from the pop-up menu.4. Click Apply and reboot the computerYou should now have a different IP address
Let me know if you need additional help so I can assist further.
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