From 31e24bc19e6f81cd9fb3ac0da29071b0795ef4dc Mon Sep 17 00:00:00 2001
From: Keith Broughton <keith.broughton@immutable.com>
Date: Thu, 27 Mar 2025 19:42:04 +1100
Subject: [PATCH] Blockscout fallback

---
 packages/checkout/sdk/src/balances/balances.ts | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/packages/checkout/sdk/src/balances/balances.ts b/packages/checkout/sdk/src/balances/balances.ts
index 7a0fd299e8..1bf071cab2 100644
--- a/packages/checkout/sdk/src/balances/balances.ts
+++ b/packages/checkout/sdk/src/balances/balances.ts
@@ -323,9 +323,12 @@ export const getAllBalances = async (
         getBlockscoutBalance(config, address!, chainId, tokens),
       );
     } catch (error) {
-      // Blockscout rate limiting, fallback to RPC node
+      // Blockscout rate limiting or errors, fallback to RPC node
       if ((error as CheckoutError).type === CheckoutErrorType.GET_INDEXER_BALANCE_ERROR
-        && (error as CheckoutError).data?.error?.code === HttpStatusCode.TooManyRequests) {
+        && (
+          (error as CheckoutError).data?.error?.code === HttpStatusCode.TooManyRequests
+          || (error as CheckoutError).data?.error?.code === HttpStatusCode.InternalServerError
+        )) {
         return getTokenBalances(config, provider, walletAddress, chainId, tokens);
       }
       throw error;