{"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":"Analyze the cause of the error: The team needs to conduct a deep analysis of the error to identify the reasons that led  to it, in order to develop targeted solutions."}]}],"pr":"5d89d307635173b125616c42aa20fd7882b059e239117b59050bcf7b10e047ae"}