{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the methods for troubleshooting blockchain node failures?","a":"Check network connection: Check whether the network connection between  the node and other nodes is normal. Network diagnostic tools such as ping and traceroute can be used to test the connectivity between nodes."}]}],"pr":"ac5002baa9fdfa4d3ea91a309ebae7acc479d9fc2f7920a3430544b0d4b02c69"}