`Error during processing events...` in fluffychat.

**Steps to Reproduce**
I dont work on fluffychat, I have no useful information WRT reproducibility.

**Code sample**
``

**Version**
- Platform: Linux
- Flutter version: 2.2.3-stable
- Hive version: `hive_flutter: ^1.1.0`

I opened this because I saw no other issue with this error.

Full hive error:

```
flutter: # [ERROR] Error during processing events - HiveError: This should not happen. Please open an issue on GitHub.
flutter: ## Stacktrace:
flutter: #0 BinaryReaderImpl.readFrame (package:hive/src/binary/binary_reader_impl.dart:250)
#1 StorageBackendVm.readValue. (package:hive/src/backend/vm/storage_backend_vm.dart:110)

#2 LazyBoxImpl.get (package:hive/src/box/lazy_box_impl.dart:32)

#3 FamedlySdkHiveDatabase.storeEventUpdate (package:matrix/src/database/hive_database.dart:834)

#4 Client._handleEvent (package:matrix/src/client.dart:1412)

#5 Client._handleRoomEvents (package:matrix/src/client.dart:1368)

#6 Client._handleRooms (package:matrix/src/client.dart:1260)

#7 Client.handleSync (package:matrix/src/client.dart:1152)

#8 Client._innerSync. (package:matrix/src/client.dart:1093)

#9 Client._innerSync (package:matrix/src/client.dart:1098)

flutter: # [WARNING] Something went wrong: - Exception: HiveError: This should not happen. Please open an issue on GitHub.
```

Start with package:hive/src/binary/binary_reader_impl.dart at BinaryReaderImpl.readFrame, then follow the stack through storage_backend_vm.dart, lazy_box_impl.dart, and matrix/src/database/hive_database.dart. Reproduction details are absent, so first determine what input or stored data reaches the failing read; done requires an identified cause and a reproducible validation path.

Written by the indexing model from the issue text.