Flutter IOS App crash in background

I am using this plugin to download a large number of files, and it works fine on both iOS and Android platforms. However, recently I have been facing a crash issue when the iOS app goes into the background.

<img width="1520" height="936" alt="Image" src="https://github.com/user-attachments/assets/6352a459-f5ad-46f0-b2fe-aae3045326e2" />