{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the procedure to follow when a blockchain upgrade fails?","a":"Analyze the cause: First, conduct a thorough analysis of the reasons for  the upgrade failure, which may include technical issues, code errors, network failures, etc."}]}],"pr":"dbd82b554279b568fd4a309ec798eac329f75f481e3af6fbe6f10231f4d5915e"}