{"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":"Develop an upgrade plan: After understanding the failure reasons, the technical team should develop a detailed upgrade plan, including upgrade goals, upgrade content, technical roadmaps, etc. The upgrade plan should fully consider the characteristics of the  existing system, ensuring the feasibility and stability of the new version."}]}],"pr":"d0fdce848ca9467466be315f5bf50b7db151a8590a2a7cbd43dcfb8df95356ab"}