{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How should errors be handled after discovering them during the blockchain version upgrade?","a":"Analyze the cause of the error: Conduct in-depth research on the  error to find the root cause and develop targeted solutions."}]}],"pr":"db7ad5eec448a641626192145f4a18dbd7128335cc6a19d7073e58fef459014e"}