string(270) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=cad%E6%BF%80%E6%B4%BB%E7%A0%81%E6%98%BE%E7%A4%BA%E9%94%99%E8%AF%AF%E6%80%8E%E4%B9%88%E5%8A%9E%E5%95%8A => Failed to connect to 101.89.117.144 port 38076: Connection refused"
cad激活码显示错误怎么办啊
