diff --git a/packages/relay/src/lib/services/ethService/ethCommonService/index.ts b/packages/relay/src/lib/services/ethService/ethCommonService/index.ts
index 4279c967ea..da37065176 100644
--- a/packages/relay/src/lib/services/ethService/ethCommonService/index.ts
+++ b/packages/relay/src/lib/services/ethService/ethCommonService/index.ts
@@ -346,13 +346,28 @@ export class CommonService implements ICommonService {
 
     const logs: Log[] = [];
     for (const log of logResults) {
+      if (log.block_number == null || log.index == null || log.block_hash === EthImpl.emptyHex) {
+        if (this.logger.isLevelEnabled('debug')) {
+          this.logger.debug(
+            `${
+              requestDetails.formattedRequestId
+            } Log entry is missing required fields: block_number, index, or block_hash is an empty hex (0x). log=${JSON.stringify(
+              log,
+            )}`,
+          );
+        }
+        throw predefined.INTERNAL_ERROR(
+          `The log entry from the remote Mirror Node server is missing required fields. `,
+        );
+      }
+
       logs.push(
         new Log({
           address: log.address,
           blockHash: toHash32(log.block_hash),
-          blockNumber: nullableNumberTo0x(log.block_number),
+          blockNumber: numberTo0x(log.block_number),
           data: log.data,
-          logIndex: nullableNumberTo0x(log.index),
+          logIndex: numberTo0x(log.index),
           removed: false,
           topics: log.topics,
           transactionHash: toHash32(log.transaction_hash),
diff --git a/packages/relay/tests/lib/eth/eth_getBlockByHash.spec.ts b/packages/relay/tests/lib/eth/eth_getBlockByHash.spec.ts
index 2696d5b717..22573e6baf 100644
--- a/packages/relay/tests/lib/eth/eth_getBlockByHash.spec.ts
+++ b/packages/relay/tests/lib/eth/eth_getBlockByHash.spec.ts
@@ -367,28 +367,34 @@ describe('@ethGetBlockByHash using MirrorNode', async function () {
     });
   });
 
-  it('eth_getBlockByHash should gracefully handle nulbale entities found in logs', async function () {
+  it('eth_getBlockByHash should throw an error if nulbale entities found in logs', async function () {
     // mirror node request mocks
     restMock.onGet(`blocks/${BLOCK_HASH}`).reply(200, DEFAULT_BLOCK);
     restMock.onGet(CONTRACT_RESULTS_WITH_FILTER_URL).reply(200, defaultContractResults);
     restMock.onGet('network/fees').reply(200, DEFAULT_NETWORK_FEES);
 
-    const nullEntitiedLogs = {
-      logs: [{ ...DEFAULT_LOGS.logs[0], block_number: null, transaction_index: null, logIndex: null }],
-    };
-
-    restMock.onGet(CONTRACT_RESULTS_LOGS_WITH_FILTER_URL).reply(200, nullEntitiedLogs);
+    const nullEntitiedLogs = [
+      {
+        logs: [{ ...DEFAULT_LOGS.logs[0], block_number: null }],
+      },
+      {
+        logs: [{ ...DEFAULT_LOGS.logs[0], index: null }],
+      },
+      {
+        logs: [{ ...DEFAULT_LOGS.logs[0], block_hash: '0x' }],
+      },
+    ];
 
-    const result = await ethImpl.getBlockByHash(BLOCK_HASH, false, requestDetails);
+    for (const logEntry of nullEntitiedLogs) {
+      try {
+        restMock.onGet(CONTRACT_RESULTS_LOGS_WITH_FILTER_URL).reply(200, logEntry);
 
-    RelayAssertions.assertBlock(result, {
-      hash: BLOCK_HASH_TRIMMED,
-      gasUsed: TOTAL_GAS_USED,
-      number: BLOCK_NUMBER_HEX,
-      parentHash: BLOCK_HASH_PREV_TRIMMED,
-      timestamp: BLOCK_TIMESTAMP_HEX,
-      transactions: [CONTRACT_HASH_1, CONTRACT_HASH_2],
-      receiptsRoot: DEFAULT_BLOCK_RECEIPTS_ROOT_HASH,
-    });
+        await ethImpl.getBlockByHash(BLOCK_HASH, false, requestDetails);
+        expect.fail('should have thrown an error');
+      } catch (error) {
+        expect(error).to.exist;
+        expect(error.message).to.include('The log entry from the remote Mirror Node server is missing required fields');
+      }
+    }
   });
 });
diff --git a/packages/relay/tests/lib/eth/eth_getBlockByNumber.spec.ts b/packages/relay/tests/lib/eth/eth_getBlockByNumber.spec.ts
index 4242341ef2..84d0a44af5 100644
--- a/packages/relay/tests/lib/eth/eth_getBlockByNumber.spec.ts
+++ b/packages/relay/tests/lib/eth/eth_getBlockByNumber.spec.ts
@@ -612,28 +612,34 @@ describe('@ethGetBlockByNumber using MirrorNode', async function () {
     });
   });
 
-  it('eth_getBlockByNumber should gracefully handle nulbale entities found in logs', async function () {
+  it('eth_getBlockByNumber should throw an error if nulbale entities found in logs', async function () {
     // mirror node request mocks
     restMock.onGet(`blocks/${BLOCK_HASH}`).reply(200, DEFAULT_BLOCK);
     restMock.onGet(CONTRACT_RESULTS_WITH_FILTER_URL).reply(200, defaultContractResults);
     restMock.onGet('network/fees').reply(200, DEFAULT_NETWORK_FEES);
 
-    const nullEntitiedLogs = {
-      logs: [{ ...DEFAULT_LOGS.logs[0], block_number: null, transaction_index: null, logIndex: null }],
-    };
-
-    restMock.onGet(CONTRACT_RESULTS_LOGS_WITH_FILTER_URL).reply(200, nullEntitiedLogs);
-
-    const result = await ethImpl.getBlockByNumber(BLOCK_HASH, false, requestDetails);
-
-    RelayAssertions.assertBlock(result, {
-      hash: BLOCK_HASH_TRIMMED,
-      gasUsed: TOTAL_GAS_USED,
-      number: BLOCK_NUMBER_HEX,
-      parentHash: BLOCK_HASH_PREV_TRIMMED,
-      timestamp: BLOCK_TIMESTAMP_HEX,
-      transactions: [CONTRACT_HASH_1, CONTRACT_HASH_2],
-      receiptsRoot: DEFAULT_BLOCK_RECEIPTS_ROOT_HASH,
-    });
+    const nullEntitiedLogs = [
+      {
+        logs: [{ ...DEFAULT_LOGS.logs[0], block_number: null }],
+      },
+      {
+        logs: [{ ...DEFAULT_LOGS.logs[0], index: null }],
+      },
+      {
+        logs: [{ ...DEFAULT_LOGS.logs[0], block_hash: '0x' }],
+      },
+    ];
+
+    for (const logEntry of nullEntitiedLogs) {
+      try {
+        restMock.onGet(CONTRACT_RESULTS_LOGS_WITH_FILTER_URL).reply(200, logEntry);
+
+        await ethImpl.getBlockByNumber(BLOCK_HASH, false, requestDetails);
+        expect.fail('should have thrown an error');
+      } catch (error) {
+        expect(error).to.exist;
+        expect(error.message).to.include('The log entry from the remote Mirror Node server is missing required fields');
+      }
+    }
   });
 });