{"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":"5020ef394c4a440df72ab187b5ad56d6fdf9468f3eff51157001576bc8864f6d"}