{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the ways to handle programming failures in a blockchain?","a":"Fault analysis and location: Conduct in-depth analysis of the faulty nodes to find  the root cause of the failure, so as to take targeted repair measures."}]}],"pr":"9c123c40726d184f01830142c0b943cc70abfe7bf81c060f4a2a8405dd077707"}