Add error case

Author: Mechanix97

aggregation_mode/src/backend/fetcher.rs

@@ -52,6 +52,10 @@ impl ProofsFetcher {
             .await
             .map_err(|_| ProofsFetcherError::BlockNumber)?;
 
+        if current_block < self.last_processed_block {
+            return Err(ProofsFetcherError::BlockNumber);
+        }
+
         info!(
             "Fetching proofs from batch logs starting from block number {} upto {}",
             self.last_processed_block,

config-files/config-proof-aggregator-mock.yaml

@@ -3,7 +3,7 @@ eth_ws_url: ws://localhost:8545
 max_proofs_in_queue: 1000
 proof_aggregation_service_address: 0xB0D4afd8879eD9F52b28595d31B441D079B2Ca07
 aligned_service_manager_address: 0x851356ae760d987E095750cCeb3bC6014560891C
-last_processed_block: 626
+last_processed_block: 662
 ecdsa:
   private_key_store_path: config-files/anvil.proof-aggregator.ecdsa.key.json
   private_key_store_password: ''