Hi, The details section shows 500 error for flows that uses

IncludeFile()

. Works when its removed. Here's the stacktrace:

Traceback (most recent call last):
  File "/usr/lib/python3.7/threading.py", line 885, in _bootstrap
    self._bootstrap_inner()
  File "/usr/lib/python3.7/threading.py", line 917, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.7/threading.py", line 865, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib/python3.7/multiprocessing/pool.py", line 412, in _handle_workers
    pool._maintain_pool()
  File "/usr/lib/python3.7/multiprocessing/pool.py", line 248, in _maintain_pool
    self._repopulate_pool()
  File "/usr/lib/python3.7/multiprocessing/pool.py", line 241, in _repopulate_pool
    w.start()
  File "/usr/lib/python3.7/multiprocessing/process.py", line 112, in start
    self._popen = self._Popen(self)
  File "/usr/lib/python3.7/multiprocessing/context.py", line 277, in _Popen
    return Popen(process_obj)
  File "/usr/lib/python3.7/multiprocessing/popen_fork.py", line 20, in __init__
    self._launch(process_obj)
  File "/usr/lib/python3.7/multiprocessing/popen_fork.py", line 74, in _launch
    code = process_obj._bootstrap()
  File "/usr/lib/python3.7/multiprocessing/process.py", line 297, in _bootstrap
    self.run()
  File "/usr/lib/python3.7/multiprocessing/process.py", line 99, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib/python3.7/multiprocessing/pool.py", line 121, in worker
    result = (True, func(*args, **kwds))
  File "/root/services/ui_backend_service/data/cache/client/cache_worker.py", line 29, in execute_action
    execute(tempdir, action_cls, request)
  File "/root/services/ui_backend_service/data/cache/client/cache_worker.py", line 56, in execute
    invalidate_cache=req.get('invalidate_cache', False))
  File "/root/services/ui_backend_service/data/cache/get_data_action.py", line 122, in execute
    results[target_key] = cacheable_exception_value(ex)
  File "/root/services/ui_backend_service/data/cache/utils.py", line 104, in cacheable_exception_value
    return json.dumps([False, ex.__class__.__name__, str(ex), get_traceback_str()])
  File "/root/services/ui_backend_service/data/cache/get_data_action.py", line 120, in execute
    results[target_key] = json.dumps(result)
  File "/usr/lib/python3.7/json/__init__.py", line 231, in dumps
    return _default_encoder.encode(obj)
  File "/usr/lib/python3.7/json/encoder.py", line 199, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/lib/python3.7/json/encoder.py", line 257, in iterencode
    return _iterencode(o, 0)
  File "/usr/lib/python3.7/json/encoder.py", line 179, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '

TypeError: Object of type bytes is not JSON serializable

Metaflow services are deployed & run on k8s

Thanks! We are triaging