{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"If the blockchain upgrade fails, how can validators and operators recover?","a":"First, they need to conduct a deep analysis of the reasons for the upgrade failure, which may include checking logs,  network failures, hardware or software issues, etc."}]}],"pr":"eadf37a71c18bd22f3597271ce61dd9c6662f1117044a6c784803133534ad0cb"}