KrzysztofMaciejewski
Hello, from the error message, it shows that the connection failed. Please check whether the hosts file has the specified IP address for the domain name bt.cn. If there is a backup file, delete the content related to bt.cn.
View, backup and delete commands:
cat /etc/hosts
cp /etc/hosts /etc/hosts_bak
sed -i "/bt.cn/d" /etc/hosts
