Hi Qi Song,
The issue is caused by SDK 34 requiring that registered receiver specify whether they are exported or not. As 5.3.2 predates SDK 34, you’ll need to update calls to registerReceiver as per the following changelist:
https://github.com/EpicGames/UnrealEngine/commit/b52ba7d6d17a854beb6631dd711a61fe62484583
Best regards.