{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the handling process after a failed blockchain version upgrade?","a":"Detection of upgrade failure: Firstly, the blockchain system will detect the failure of the version upgrade, which may be caused by incompatible software versions, node  configuration issues, or network anomalies."}]}],"pr":"ae5ded1771bbed78e43961ea4d4c917c110d08b713702a97f10a3406996c224a"}