{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How should a new upgrade plan be developed and executed after a failed blockchain version upgrade?","a":"Analyze the failure reasons: Firstly, a comprehensive analysis of the reasons for the upgrade failure is needed, including technical  defects, code vulnerabilities, compatibility issues, etc. By having a deep understanding of the failure reasons, provide a basis for the subsequent upgrade plan."}]}],"pr":"dbde72f601be37a94d2277f33c895ec3b5415cc62b05a4e5c26390896245f315"}