{"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":"395f1786265d6153e5d1294f56e3b7fd10bf7b718aed3fa5cdfde7968f42614a"}