ERROR services.py:1207 -- Failed to start the dashboard , return code 1

[zsq-berry]

2023-09-04 16:18:23,382 cisTarget INFO Reading cisTarget database
2023-09-04 16:18:43,490 ERROR services.py:1207 -- Failed to start the dashboard , return code 1
2023-09-04 16:18:43,495 ERROR services.py:1232 -- Error should be written to 'dashboard.log' or 'dashboard.err'. We are printing the last 20 lines for you. See 'https://docs.ray.io/en/master/ray-observability/ray-logging.html#logging-directory-structure' to find where the log file is.
2023-09-04 16:18:43,497 ERROR services.py:1276 --
The last 20 lines of /home/szhu/TFH/pycisTarget/session_2023-09-04_16-18-41_438645_20768/logs/dashboard.log (it contains the error message from the dashboard):
File "/opt/miniconda2/lib/python3.9/site-packages/ray/dashboard/modules/log/log_manager.py", line 8, in
from ray.util.state.common import (
File "/opt/miniconda2/lib/python3.9/site-packages/ray/util/state/init.py", line 1, in
from ray.util.state.api import (
File "/opt/miniconda2/lib/python3.9/site-packages/ray/util/state/api.py", line 17, in
from ray.util.state.common import (
File "/opt/miniconda2/lib/python3.9/site-packages/ray/util/state/common.py", line 420, in
class ActorState(StateSchema):
File "pydantic/dataclasses.py", line 260, in pydantic.dataclasses.dataclass.wrap
File "pydantic/dataclasses.py", line 186, in pydantic.dataclasses._process_class
File "pydantic/main.py", line 1006, in pydantic.main.create_model
File "pydantic/main.py", line 205, in pydantic.main.ModelMetaclass.new
File "pydantic/fields.py", line 491, in pydantic.fields.ModelField.infer
File "pydantic/fields.py", line 421, in pydantic.fields.ModelField.init
File "pydantic/fields.py", line 537, in pydantic.fields.ModelField.prepare
File "pydantic/fields.py", line 641, in pydantic.fields.ModelField._type_analysis
File "/opt/miniconda2/lib/python3.9/typing.py", line 847, in subclasscheck
return issubclass(cls, self.origin)
TypeError: issubclass() arg 1 must be a class
2023-09-04 16:18:43,812 INFO worker.py:1621 -- Started a local Ray instance.

[SeppeDeWinter]

Hi @zsq-berry

can you show the code you were running that produced this error?

Also can you try running

import ray

ray.init(
 num_cpus = 5,
  _temp_dir = os.path.join(tmp_dir + 'ray_spill'))

Best,

Seppe