{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What should you do if you realize you have made a mistake during the process of upgrading a blockchain version?","a":"timely loss prevention: First, immediately stop the current upgrade  process to prevent the error from spreading and causing greater losses."}]}],"pr":"ee73cdcd3a4ca1c60e27bb7d1448b8afc4aa1189fa736881c1ecd7d89c537245"}