fix only check if client is initialized

src/data.rs

@@ -193,7 +193,7 @@ impl Data {
 				gql_url: self.cfg.indexer_endpoint.clone(),
 			});
 			self.indexer_genesis_hash = self.indexer().fetch_genesis_hash().await?;
-			if self.indexer_genesis_hash != self.genesis_hash {
+			if self.client.is_some() && self.indexer_genesis_hash != self.genesis_hash {
 				println!("⚠️ indexer does not have the same genesis hash as blockchain")
 			}
 		};