string(286) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%A1%A8%E6%A0%BC%E4%B8%8D%E5%B0%8F%E5%BF%83%E4%BF%9D%E5%AD%98%E9%94%99%E8%AF%AF%2C%E5%A6%82%E4%BD%95%E8%BF%94%E5%9B%9E => Failed to connect to 218.78.59.96 port 38042: Connection refused"
表格不小心保存错误,如何返回
