From a6220a1ba4e19c9504873c54543eeca0da312b30 Mon Sep 17 00:00:00 2001
From: Andrew Fawcett <andrewfawcett@Andrews-MacBook.local>
Date: Sun, 12 May 2019 10:42:04 -0700
Subject: [PATCH] Temp fix for Summer'19 platform issue see issue 818

https://github.com/afawcett/declarative-lookup-rollup-summaries/issues/818#
---
 force-app/main/classes/RollupService.cls | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/force-app/main/classes/RollupService.cls b/force-app/main/classes/RollupService.cls
index ac2e9bbb..0b789599 100644
--- a/force-app/main/classes/RollupService.cls
+++ b/force-app/main/classes/RollupService.cls
@@ -721,7 +721,10 @@ global with sharing class RollupService
 		Set<Id> masterRecordIdsFromMerge = new Set<Id>();
 		if(sObjectDescribe.isMergeable()) {
 			for(SObject existingRecord : existingRecords.values()) {
-				Id masterRecordId = (Id) existingRecord.get('MasterRecordId');
+				Id masterRecordId = null;
+				try {
+					masterRecordId = (Id) existingRecord.get('MasterRecordId');
+				} catch(Exception e) {}				
 				if(masterRecordId!=null) {
 					masterRecordIdsFromMerge.add(masterRecordId);					
 				}