diff --git a/eth/api.go b/eth/api.go
index 9336880221..b953be2d09 100644
--- a/eth/api.go
+++ b/eth/api.go
@@ -277,6 +277,9 @@ func (api *DebugAPI) DumpBlock(blockNr rpc.BlockNumber) (state.Dump, error) {
 		// both the pending block as well as the pending state from
 		// the miner and operate on those
 		_, stateDb := api.eth.miner.Pending()
+		if stateDb == nil {
+			return state.Dump{}, errors.New("pending state is not available")
+		}
 		return stateDb.RawDump(opts), nil
 	}
 
@@ -385,6 +388,9 @@ func (api *DebugAPI) AccountRange(blockNrOrHash rpc.BlockNumberOrHash, start hex
 			// both the pending block as well as the pending state from
 			// the miner and operate on those
 			_, stateDb = api.eth.miner.Pending()
+			if stateDb == nil {
+				return state.IteratorDump{}, errors.New("pending state is not available")
+			}
 		} else {
 			var header *types.Header
 			if number == rpc.LatestBlockNumber {
diff --git a/eth/api_backend.go b/eth/api_backend.go
index a6f6449435..d5935ac4f6 100644
--- a/eth/api_backend.go
+++ b/eth/api_backend.go
@@ -68,6 +68,9 @@ func (b *EthAPIBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumb
 	// Pending block is only known by the miner
 	if number == rpc.PendingBlockNumber {
 		block := b.eth.miner.PendingBlock()
+		if block == nil {
+			return nil, errors.New("pending block is not available")
+		}
 		return block.Header(), nil
 	}
 	// Otherwise resolve and return the block
@@ -136,6 +139,9 @@ func (b *EthAPIBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumbe
 	// Pending block is only known by the miner
 	if number == rpc.PendingBlockNumber {
 		block := b.eth.miner.PendingBlock()
+		if block == nil {
+			return nil, errors.New("pending block is not available")
+		}
 		return block, nil
 	}
 	// Otherwise resolve and return the block
@@ -217,6 +223,9 @@ func (b *EthAPIBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.B
 	// Pending state is only known by the miner
 	if number == rpc.PendingBlockNumber {
 		block, state := b.eth.miner.Pending()
+		if block == nil || state == nil {
+			return nil, nil, errors.New("pending state is not available")
+		}
 		return state, block.Header(), nil
 	}
 	// Otherwise resolve the block number and return its state
diff --git a/eth/filters/filter.go b/eth/filters/filter.go
index c0c5694cff..d256c3b222 100644
--- a/eth/filters/filter.go
+++ b/eth/filters/filter.go
@@ -328,6 +328,9 @@ func (f *Filter) checkMatches(ctx context.Context, header *types.Header) ([]*typ
 // pendingLogs returns the logs matching the filter criteria within the pending block.
 func (f *Filter) pendingLogs() ([]*types.Log, error) {
 	block, receipts := f.sys.backend.PendingBlockAndReceipts()
+	if block == nil || receipts == nil {
+		return nil, errors.New("pending block is not available")
+	}
 	if bloomFilter(block.Bloom(), f.addresses, f.topics) {
 		var unfiltered []*types.Log
 		for _, r := range receipts {
diff --git a/internal/ethapi/bor_api.go b/internal/ethapi/bor_api.go
index 0159f12b4d..8129989b58 100644
--- a/internal/ethapi/bor_api.go
+++ b/internal/ethapi/bor_api.go
@@ -74,7 +74,11 @@ func (api *BorAPI) SendRawTransactionConditional(ctx context.Context, input hexu
 	}
 
 	currentHeader := api.b.CurrentHeader()
-	currentState, _, _ := api.b.StateAndHeaderByNumber(ctx, rpc.BlockNumber(currentHeader.Number.Int64()))
+	currentState, _, err := api.b.StateAndHeaderByNumber(ctx, rpc.BlockNumber(currentHeader.Number.Int64()))
+
+	if currentState == nil || err != nil {
+		return common.Hash{}, err
+	}
 
 	// check block number range
 	if err := currentHeader.ValidateBlockNumberOptions4337(options.BlockNumberMin, options.BlockNumberMax); err != nil {