HLS (.m3u8) format video from file not playing on iOS devices

Question

I'm trying to play videos offline, and this works on Android but on iOS, even when run on real device it's showing the following error:

[VERBOSE-2:dart_vm_initializer.cc(41)] Unhandled Exception: PlatformException(VideoError, Failed to load video: The operation couldn’t be completed. (CoreMediaErrorDomain error -12865.), null, null)

Note: Using network URL' it played fine.

I'm wondering if there's anything we missed to make these files play?