{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the recovery measures that can be taken if the blockchain upgrade is not successful?","a":"Check the logs and error messages during  the upgrade process: By analyzing the logs and error messages, the cause of the upgrade failure can be identified, providing a basis for subsequent repairs."}]}],"pr":"977655fa406ed6b2153d18158ff56fa00d7f642f715bb62e45a3ec722b94d4b3"}