In config.yaml search for "xcc_target_address", should exist twice, farmer and pool address.
Linux: /home/USERNAME/.chives/mainnet/config
Windows: C:\Users\USERNAME\.chives\mainnet\config
Linux
Check addresses:
cat ~/.chives/mainnet/config/config.yaml | grep xcc_target_address
Open and edit:
sudo apt-get -y install nano
sudo nano ~/.chives/mainnet/config/config.yaml
Windows (PowerShell)
Check addresses:
Select-String -Path C:\Users\USERNAME\.chives\mainnet\config\config.yaml -Pattern xcc_target_address
Open and edit:
Start-Process notepad C:\Users\USERNAME\.chives\mainnet\config\config.yaml
GUI
Go to Farm tab, click on 3 dots on the top-right.

If you see warning that it didn't find private keys for the addresses, it means that you farming to a cold wallet or you made a mistake and are farming to wrong wallet.