{"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":"evelop a repair plan: According to the cause of the error, develop a corresponding repair plan, including code modification, algorithm optimization, etc., to ensure that the repair plan can effectively solve the  error problem."}]}],"pr":"73cd8f87d9241ec178bc6bdebf29d6e00475685cbf49decfc6d50acbb7a8f7b8"}