diff --git a/packages/network-support/CHANGELOG.md b/packages/network-support/CHANGELOG.md
index 36bc9623..0d91bcf8 100644
--- a/packages/network-support/CHANGELOG.md
+++ b/packages/network-support/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.2.6] 2024-05-20
+
 ## [1.2.5] 2024-05-16
 
 ## [1.2.4] 2024-05-13
@@ -37,7 +39,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - It's a internal library.
 
-[unreleased]: https://github.com/subquery/network-support/compare/v1.2.5...HEAD
+[unreleased]: https://github.com/subquery/network-support/compare/v1.2.6...HEAD
+[1.2.6]: https://github.com/subquery/network-support/releases/tag/v1.2.6
 [1.2.5]: https://github.com/subquery/network-support/releases/tag/v1.2.5
 [1.2.4]: https://github.com/subquery/network-support/releases/tag/v1.2.4
 [1.2.3]: https://github.com/subquery/network-support/releases/tag/v1.2.3
diff --git a/packages/network-support/package.json b/packages/network-support/package.json
index cc1790e3..81e7addb 100644
--- a/packages/network-support/package.json
+++ b/packages/network-support/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@subql/network-support",
-  "version": "1.2.5",
+  "version": "1.2.6",
   "main": "dist/index.js",
   "author": "SubQuery Pte Limited",
   "license": "Apache-2.0",
diff --git a/packages/network-support/src/fetch.ts b/packages/network-support/src/fetch.ts
index f8ed779d..b7296d24 100644
--- a/packages/network-support/src/fetch.ts
+++ b/packages/network-support/src/fetch.ts
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import { OrderManager } from './orderManager';
-import { customFetch, generateUniqueId, Logger } from './utils';
+import { customFetch, generateUniqueId, Logger, safeJSONParse } from './utils';
 import { OrderType } from './types';
 import { ScoreType } from './scoreManager';
 import { Base64 } from 'js-base64';
@@ -38,6 +38,7 @@ export function createFetch(
 ): (init: RequestInit) => Promise<Response> {
   let retries = 0;
   let triedFallback = false;
+  let errorMsg = '';
   return async function fetch(init: RequestInit): Promise<Response> {
     const requestId = generateUniqueId();
     const requestResult: () => Promise<Response> = async () => {
@@ -60,7 +61,10 @@ export function createFetch(
           };
           logger?.warn(`fallback to ${orderManager.fallbackServiceUrl}`);
         } else {
-          throw new FetchError(`no available order`, 'sqn');
+          throw new FetchError(
+            `no available order. retries: ${retries}.${errorMsg ? ' error: ' + errorMsg : ''}`,
+            'sqn'
+          );
         }
       }
       const { url, headers, type, runner, channelId } = requestParams;
@@ -114,12 +118,16 @@ export function createFetch(
         } as unknown as Response;
       } catch (e) {
         logger?.warn(e);
+        errorMsg = (e as Error)?.message || '';
         if (retries < maxRetries || (orderManager.fallbackServiceUrl && !triedFallback)) {
-          orderManager.updateScore(runner, ScoreType.RPC);
+          const errorObj = safeJSONParse(errorMsg);
+          if (!(errorObj?.code === 1140 && errorObj?.error === 'Invalid request')) {
+            orderManager.updateScore(runner, ScoreType.RPC);
+          }
           retries += 1;
           return requestResult();
         }
-        throw new FetchError(`reach max retries`, 'SQN');
+        throw new FetchError(`reach max retries.${errorMsg ? ' error: ' + errorMsg : ''}`, 'SQN');
       }
     };
 
diff --git a/packages/network-support/src/utils/common.ts b/packages/network-support/src/utils/common.ts
new file mode 100644
index 00000000..217d0c80
--- /dev/null
+++ b/packages/network-support/src/utils/common.ts
@@ -0,0 +1,10 @@
+// Copyright 2020-2024 SubQuery Pte Ltd authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+export function safeJSONParse(json: string) {
+  try {
+    return JSON.parse(json);
+  } catch (e) {
+    return undefined;
+  }
+}
diff --git a/packages/network-support/src/utils/index.ts b/packages/network-support/src/utils/index.ts
index b6336f5f..2b9bc3e2 100644
--- a/packages/network-support/src/utils/index.ts
+++ b/packages/network-support/src/utils/index.ts
@@ -6,3 +6,4 @@ export * from './query';
 export * from './store';
 export * from './auth';
 export * from './uniqueId';
+export * from './common';