if let Err(e) = persister.persist_graph(handler.network_graph()) {
log_error!(logger, "Error: Failed to persist network graph, check your disk and permissions {}", e)
}
if let Err(e) = persister.persist_graph(handler.network_graph()) {
log_error!(logger, "Error: Failed to persist network graph, check your disk and permissions {}", e)
}