From b57152a1c906c4c97e853c3d19770bd515e1d44f Mon Sep 17 00:00:00 2001
From: Nicolas Werner <nicolas.werner@hotmail.de>
Date: Sat, 18 Jun 2022 00:10:47 +0200
Subject: [PATCH] Skip migration if sender_key is not a string or present

---
 src/Cache.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Cache.cpp b/src/Cache.cpp
index 1df16bf5..e8578655 100644
--- a/src/Cache.cpp
+++ b/src/Cache.cpp
@@ -1326,7 +1326,9 @@ Cache::runMigrations()
                std::map<std::string, std::string> inboundSessions;
                std::map<std::string, std::string> megolmSessionData;
                while (cursor.get(key, value, MDB_NEXT)) {
-                   auto indexVal   = nlohmann::json::parse(key);
+                   auto indexVal = nlohmann::json::parse(key);
+                   if (!indexVal.contains("sender_key") || !indexVal.at("sender_key").is_string())
+                       continue;
                    auto sender_key = indexVal["sender_key"].get<std::string>();
                    indexVal.erase("sender_key");