Offline mode not usable: raise TypeError: Object of type VaspJob is not JSON serializable

[LuciusV]

If you are unable to use the Discourse forum, you may submit an issue here, but you must clearly state the reason you are unable to use the Discourse forum in your ticket: according to
Bug reports should go directly to the GitHub Issues page.

Dear developers,
I set up local Mongodb database and run in bind to 0.0.0.0
After I start my workflow, it only completes VASP calculation, and then I got error in file ‘FW_job.error’ like this:
Traceback (most recent call last):
File “/home/sugon/venvs/atomate/lib/python3.7/site-packages/fireworks/core/rocket.py”, line 245, in run
Rocket.update_checkpoint(lp, launch_dir, launch_id, checkpoint)
File “/home/sugon/venvs/atomate/lib/python3.7/site-packages/fireworks/core/rocket.py”, line 442, in update_checkpoint
f_out.write(json.dumps(d, ensure_ascii=False))
File “/home/sugon/anaconda3/lib/python3.7/json/init.py”, line 238, in dumps
**kw).encode(obj)
File “/home/sugon/anaconda3/lib/python3.7/json/encoder.py”, line 199, in encode
chunks = self.iterencode(o, _one_shot=True)
File “/home/sugon/anaconda3/lib/python3.7/json/encoder.py”, line 257, in iterencode
return _iterencode(o, 0)
File “/home/sugon/anaconda3/lib/python3.7/json/encoder.py”, line 179, in default
raise TypeError(f’Object of type {o.class.name} ’
TypeError: Object of type VaspJob is not JSON serializable
Traceback (most recent call last):
File “/home/sugon/venvs/atomate/bin/rlaunch”, line 8, in
sys.exit(rlaunch())
File “/home/sugon/venvs/atomate/lib/python3.7/site-packages/fireworks/scripts/rlaunch_run.py”, line 154, in rlaunch
launch_rocket(launchpad, fworker, args.fw_id, args.loglvl, pdb_on_exception=args.pdb)
File “/home/sugon/venvs/atomate/lib/python3.7/site-packages/fireworks/core/rocket_launcher.py”, line 58, in launch_rocket
rocket_ran = rocket.run(pdb_on_exception=pdb_on_exception)
File “/home/sugon/venvs/atomate/lib/python3.7/site-packages/fireworks/core/rocket.py”, line 414, in run
d = json.loads(f_in.read())
File “/home/sugon/anaconda3/lib/python3.7/json/init.py”, line 348, in loads
return _default_decoder.decode(s)
File “/home/sugon/anaconda3/lib/python3.7/json/decoder.py”, line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File “/home/sugon/anaconda3/lib/python3.7/json/decoder.py”, line 355, in raw_decode
raise JSONDecodeError(“Expecting value”, s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

[LuciusV]

This is major feature broken for clusters on which there is no chance to connect to external database. Please do something :(