Quieten merkletrie exceptions (#4378)

* quieten the txpool merkletrie exceptions
* move prepareBlock stacktraces to debug

Signed-off-by: garyschulte <garyschulte@gmail.com>

consensus/merge/src/main/java/org/hyperledger/besu/consensus/merge/blockcreation/MergeCoordinator.java

@@ -195,7 +195,7 @@ public class MergeCoordinator implements MergeMiningCoordinator, BadChainListene
         .whenComplete(
             (bestBlock, throwable) -> {
               if (throwable != null) {
-                LOG.warn("something went wrong creating block", throwable);
+                LOG.debug("something went wrong creating block", throwable);
               } else {
                 final var resultBest = validateBlock(bestBlock);
                 if (resultBest.blockProcessingOutputs.isPresent()) {

ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/transactions/TransactionPool.java

@@ -40,6 +40,7 @@ import org.hyperledger.besu.ethereum.mainnet.TransactionValidationParams;
 import org.hyperledger.besu.ethereum.mainnet.ValidationResult;
 import org.hyperledger.besu.ethereum.mainnet.feemarket.FeeMarket;
 import org.hyperledger.besu.ethereum.transaction.TransactionInvalidReason;
+import org.hyperledger.besu.ethereum.trie.MerkleTrieException;
 import org.hyperledger.besu.evm.account.Account;
 import org.hyperledger.besu.metrics.BesuMetricCategory;
 import org.hyperledger.besu.plugin.data.TransactionType;
@@ -279,10 +280,17 @@ public class TransactionPool implements BlockAddedObserver {
         .getMutable(chainHeadBlockHeader.getStateRoot(), chainHeadBlockHeader.getHash(), false)
         .map(
             worldState -> {
+              try {
                 final Account senderAccount = worldState.get(transaction.getSender());
                 return getTransactionValidator()
                     .validateForSender(
                         transaction, senderAccount, TransactionValidationParams.transactionPool());
+              } catch (MerkleTrieException ex) {
+                LOG.debug(
+                    "MerkleTrieException while validating transaction for sender {}",
+                    transaction.getSender());
+                return ValidationResult.invalid(CHAIN_HEAD_WORLD_STATE_NOT_AVAILABLE);
+              }
             })
         .orElseGet(() -> ValidationResult.invalid(CHAIN_HEAD_WORLD_STATE_NOT_AVAILABLE));
   }