BUG: Unable to run phonons with force fields and FileStore

**Describe the bug** I am trying to run a phonon calculation. The calculation appears to run OK in that - Phonon band structure PDF is correctly printed - Several YAML files seem to be correctly printed Issues: - The PDF of Phonon DOS seems to be not openable / corrupted - I also get the following error (my ``blob_output.yaml`` file is also corrupted after this): ``` 2026-03-25 08:14:58,274 INFO generate_frequencies_eigenvectors failed with exception: TypeError: 'NoneType' object is not callable The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/Users/ajain/Documents/code_venvs/atomate2/lib/python3.11/site-packages/jobflow/managers/local.py", line 117, in _run_job response = job.run(store=store) ^^^^^^^^^^^^^^^^^^^^ File "/Users/ajain/Documents/code_venvs/atomate2/lib/python3.11/site-packages/jobflow/core/job.py", line 695, in run store.update(data, key=["uuid", "index"], save=save) File "/Users/ajain/Documents/code_venvs/atomate2/lib/python3.11/site-packages/jobflow/core/store.py", line 360, in update store.update(blobs, key="blob_uuid") File "/Users/ajain/Documents/code_venvs/atomate2/lib/python3.11/site-packages/maggma/stores/mongolike.py", line 747, in update self.update_json_file() File "/Users/ajain/Documents/code_venvs/atomate2/lib/python3.11/site-packages/maggma/stores/mongolike.py", line 770, in update_json_file bytesdata = orjson.dumps( ^^^^^^^^^^^^^ TypeError: Type is not JSON serializable: ScalarFloat ``` **To Reproduce** Steps to reproduce the behavior: 1. Set up jobflow.yaml as in this example: [jobflow_filestore.yaml](https://github.com/user-attachments/files/26247480/jobflow_filestore.yaml) 2. Run the following script: [ff_phonon.py](https://github.com/user-attachments/files/26247509/ff_phonon.py) The full trace of execution is: ``` (atomate2) computron:test_scripts ajain$ python ff_phonon.py 2026-03-25 08:14:01,012 INFO Started executing jobs locally 2026-03-25 08:14:01,017 INFO Starting job - Force field relax (254ed4ae-d944-4d92-99ae-23229508fff1) 2026-03-25 08:14:05,620 INFO Finished job - Force field relax (254ed4ae-d944-4d92-99ae-23229508fff1) 2026-03-25 08:14:05,620 INFO Starting job - get_supercell_size (db50f5ed-b577-48b1-be9d-d34c46ffc8b2) 2026-03-25 08:14:05,687 INFO Finished job - get_supercell_size (db50f5ed-b577-48b1-be9d-d34c46ffc8b2) 2026-03-25 08:14:05,687 INFO Starting job - Force field static (acda7fc8-4f6b-45df-aea7-1baad0378aa7) 2026-03-25 08:14:06,041 INFO Finished job - Force field static (acda7fc8-4f6b-45df-aea7-1baad0378aa7) 2026-03-25 08:14:06,041 INFO Starting job - generate_phonon_displacements (404c4c95-49e6-4029-85c4-d0b27813795b) /Users/ajain/Documents/code_venvs/atomate2/lib/python3.11/site-packages/jobflow/core/job.py:629: UserWarning: Initial magnetic moments will not be considered for the determination of the symmetry of the structure and thus will be removed now. response = function(*self.function_args, **self.function_kwargs) 2026-03-25 08:14:09,002 INFO Finished job - generate_phonon_displacements (404c4c95-49e6-4029-85c4-d0b27813795b) 2026-03-25 08:14:09,003 INFO Starting job - run_phonon_displacements (220f2348-bac7-47c4-8034-79dc11627a59) 2026-03-25 08:14:09,156 INFO Finished job - run_phonon_displacements (220f2348-bac7-47c4-8034-79dc11627a59) 2026-03-25 08:14:09,182 INFO Starting job - Force field static 1/1 (f68ed623-cb82-4395-9ea2-edc265557e83) 2026-03-25 08:14:13,127 INFO Finished job - Force field static 1/1 (f68ed623-cb82-4395-9ea2-edc265557e83) 2026-03-25 08:14:13,128 INFO Starting job - store_inputs (220f2348-bac7-47c4-8034-79dc11627a59, 2) 2026-03-25 08:14:13,152 INFO Finished job - store_inputs (220f2348-bac7-47c4-8034-79dc11627a59, 2) 2026-03-25 08:14:13,153 INFO Starting job - generate_frequencies_eigenvectors (9e576f73-c979-4b92-9041-db8db78cfc85) The PostScript backend does not support transparency; partially transparent artists will be rendered opaque. 2026-03-25 08:14:58,274 INFO generate_frequencies_eigenvectors failed with exception: TypeError: 'NoneType' object is not callable The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/Users/ajain/Documents/code_venvs/atomate2/lib/python3.11/site-packages/jobflow/managers/local.py", line 117, in _run_job response = job.run(store=store) ^^^^^^^^^^^^^^^^^^^^ File "/Users/ajain/Documents/code_venvs/atomate2/lib/python3.11/site-packages/jobflow/core/job.py", line 695, in run store.update(data, key=["uuid", "index"], save=save) File "/Users/ajain/Documents/code_venvs/atomate2/lib/python3.11/site-packages/jobflow/core/store.py", line 360, in update store.update(blobs, key="blob_uuid") File "/Users/ajain/Documents/code_venvs/atomate2/lib/python3.11/site-packages/maggma/stores/mongolike.py", line 747, in update self.update_json_file() File "/Users/ajain/Documents/code_venvs/atomate2/lib/python3.11/site-packages/maggma/stores/mongolike.py", line 770, in update_json_file bytesdata = orjson.dumps( ^^^^^^^^^^^^^ TypeError: Type is not JSON serializable: ScalarFloat 2026-03-25 08:14:58,410 INFO Finished executing jobs locally ```