{"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":"fe56ab2713b20c73d7be683d43189f651a32b9b3baa0e224bb14ebce6f25ce4d"}