def METHOD_NAME(schain_name: str, public_key: str) -> None:
    """
    Fix config to make skaled work with a single node (mine blocks, etc)
    """
    cfm = ConfigFileManager(schain_name)
    config = cfm.skaled_config
    node = config['skaleConfig']['sChain']['nodes'][0]
    node['publicKey'] = public_key
    config['skaleConfig']['sChain']['nodes'] = [node]
    cfm.save_skaled_config(config)