Revert your server to the previous, most recent version. Go to the server root directory. Use the revert-update tool to revert to the most recent version of the server by running the following command. $ <PingServer>-old/revert-update
Go to the server root directory. Use the revert-update tool to revert to the most recent version of the server by running the following command. $ <PingServer>-old/revert-update