{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How should errors be handled during the process of upgrading a blockchain version?","a":"Develop a repair plan: After understanding the cause of the error, the development team should promptly develop corresponding repair  plans, including code modifications, vulnerability fixes, etc."}]}],"pr":"520b3db09e512786f5a11d4d355d6e56572a74aa83e75184105d13c16e29a2ca"}