{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What should you do if you realize you have made a mistake during the process of upgrading a blockchain version?","a":"error analysis: Conduct a detailed  understanding of the cause and impact of the error to develop a targeted solution."}]}],"pr":"9a61aff4ecda11ba9dfcc49712370ed8f29ecd0f6e3b02581a1f1027d139eb85"}