[pv/bm] Failure on database dump

[nrybowski]

binding_manager_1    |     return format(backend.dump_database())
binding_manager_1    |   File "/pv/binding_manager/api.py", line 32, in format
binding_manager_1    |     return (jsonify(payload), 200) if payload is not None else ('', 404)
binding_manager_1    |   File "/usr/lib/python3.8/site-packages/flask/json/__init__.py", line 370, in jsonify
binding_manager_1    |     dumps(data, indent=indent, separators=separators) + "\n",
binding_manager_1    |   File "/usr/lib/python3.8/site-packages/flask/json/__init__.py", line 211, in dumps
binding_manager_1    |     rv = _json.dumps(obj, **kwargs)
binding_manager_1    |   File "/usr/lib/python3.8/json/__init__.py", line 234, in dumps
binding_manager_1    |     return cls(
binding_manager_1    |   File "/usr/lib/python3.8/json/encoder.py", line 199, in encode
binding_manager_1    |     chunks = self.iterencode(o, _one_shot=True)
binding_manager_1    |   File "/usr/lib/python3.8/json/encoder.py", line 257, in iterencode
binding_manager_1    |     return _iterencode(o, 0)
binding_manager_1    |   File "/usr/lib/python3.8/site-packages/flask/json/__init__.py", line 100, in default
binding_manager_1    |     return _json.JSONEncoder.default(self, o)
binding_manager_1    |   File "/usr/lib/python3.8/json/encoder.py", line 179, in default
binding_manager_1    |     raise TypeError(f'Object of type {o.__class__.__name__} '
binding_manager_1    | TypeError: Object of type bytes is not JSON serializable

[nrybowski]

See f3297c0.