From 32cfbcfe6dfddf64d3d7dd3ac118222859cdea99 Mon Sep 17 00:00:00 2001
From: Jamie Hewitt <jamie.hewitt15@gmail.com>
Date: Wed, 28 Jun 2023 19:06:54 +0300
Subject: [PATCH] Checking if publishMarketFeeAddress exists

---
 src/mappings/fixedRateExchange.ts | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/mappings/fixedRateExchange.ts b/src/mappings/fixedRateExchange.ts
index df2e84f..aed3bb4 100644
--- a/src/mappings/fixedRateExchange.ts
+++ b/src/mappings/fixedRateExchange.ts
@@ -259,11 +259,14 @@ export function handlePublishMarketFeeChanged(
   const fixedRateExchange = getFixedRateExchange(fixedRateId)
 
   if (fixedRateExchange) {
-    const feeToken = getToken(
-      Address.fromString(fixedRateExchange!.publishMarketFeeAddress!),
-      false
-    )
-    const feeDecimals = BigInt.fromI32(feeToken.decimals).toI32()
+    let feeDecimals = BigInt.fromI32(18).toI32()
+    if (fixedRateExchange.publishMarketFeeAddress) {
+      const feeToken = getToken(
+        Address.fromString(fixedRateExchange!.publishMarketFeeAddress!),
+        false
+      )
+      feeDecimals = BigInt.fromI32(feeToken.decimals).toI32()
+    }
 
     fixedRateExchange.publishMarketFeeAddress =
       event.params.newMarketCollector.toHexString()