{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the recommendations for the restart and recovery process after a failed blockchain version upgrade?","a":"Analyze the failure cause: After the upgrade failure, deeply analyze the failure cause to identify the problem and develop a targeted solution. You can check from multiple  perspectives such as log files and monitoring data."}]}],"pr":"6cbe86266fd895d661386326f2d99993fec93ef388dcb98f3d6297f7a735ec71"}