Allen institute dataset cannot be loaded

*[DANDI:000021](https://dandiarchive.org/dandiset/000021/draft)*: **20191003_AIBS_mouse_ecephys_brain_observatory_1_1**

- Data type: **Neurodata Without Borders (NWB)** (**version 2.2.2**), file count: **214**, total size (bytes): **477,562,344,354**

- Species: **House mouse**

- Keywords: **electrophysiology**, **life sciences**, **machine learning**, **neurobiology**, **signal processing**

- Variables measured: **ProcessingModule**, **LFP**, **Units**

- Source paper: *Siegle, Josh; Wakeman, Wayne; Jia, Xiaoxuan; Heller, Gregg; Ramirez, Tamina; Graddis, Nile; Mei, Nicholas; Durand, Severine (2022) 20191003_AIBS_mouse_ecephys_brain_observatory_1_1*

-  Validation results summary: [BEST_PRACTICE_VIOLATION](000021_validation.txt)

- NWBE compatibility - file 1: LL-P
Size: 72289252.0 bytes |
[File info](https://api.dandiarchive.org/api/assets/4d5f1bda-3d20-46f0-a0c8-20f3a3ee9d54) |
[View on DANDI Web](https://dandiarchive.org/dandiset/000021/draft/files?location=sub-703279277%2F) |
[View on NWB Explorer](http://nwbexplorer.opensourcebrain.org/hub/nwbfile=https://api.dandiarchive.org/api/assets/4d5f1bda-3d20-46f0-a0c8-20f3a3ee9d54/download/)
- NWBE compatibility - file 2: LL-P
Size: 898779687.0 bytes |
[File info](https://api.dandiarchive.org/api/assets/e1f0127e-f5d7-4cac-a42c-bb76127f2ddc) |
[View on DANDI Web](https://dandiarchive.org/dandiset/000021/draft/files?location=sub-719828686%2F) |
[View on NWB Explorer](http://nwbexplorer.opensourcebrain.org/hub/nwbfile=https://api.dandiarchive.org/api/assets/e1f0127e-f5d7-4cac-a42c-bb76127f2ddc/download/)

Start by reproducing the load failure in NWB Explorer with DANDI dataset 000021, using the two linked assets and their DANDI and NWB Explorer pages. Check whether either listed file loads and record the failure point or message. Done means the affected dataset files can be loaded successfully, or the failure is isolated and documented with a reproducible case.

Written by the indexing model from the issue text.