{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the normal recovery process after a failed blockchain upgrade?","a":"Analyze the reasons for the upgrade failure: First, a deep analysis of the reasons for the upgrade failure is needed, which may include various factors such as software defects, configuration issues,  network failures, and more."}]}],"pr":"b300a68c0a460a1105a01410395b0da208c744a10000a430246d8174fc475a92"}