Task Run Exception

Sometimes I get this error. What’s the problem? Can you help me?

ray.exceptions.RayTaskError(RuntimeError): e[
36mray: :GetRequest()e[
39m (pid=107, ip=172.19.0.2)
File "python/ray/_raylet.pyx", line 463, in ray._raylet.execute_task
RuntimeError: This function was not imported properly.

File “/usr/local/lib/python3.7/site-packages/ray/worker.py”, line 1379, in get
raise value.as_instanceof_cause()
ray.exceptions.RayTaskError(RuntimeError): e[
36mray: :GetRequest()e[
39m (pid=107, ip=172.19.0.2)
File “python/ray/_raylet.pyx”, line 463, in ray._raylet.execute_task
RuntimeError: This function was not imported properly.

Hi, it seems like these links might related:

Do the solutions listed there work for you? If not, can you share a Python script which reproduces this error?