{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the recovery steps that validators need to perform when a blockchain upgrade fails?","a":"Restart the node: After confirming the reason for the upgrade failure, validators need to shut down and restart the node. This  will clear any errors or abnormal states that may have affected the upgrade."}]}],"pr":"7fa24a22f8fa21bfdb0099451529c03162bf373914634f41bb2ee63c9de9250a"}