Sct_run_batch failed -Number of processes must be at least 1 SCT 4.3

Hi,
I got this error when running sct_run_batch . Would you please tell me how I can solve it?
Thanks.

sct_run_batch -jobs -1 -path-data ‘/home/sahar/Teh_spineGeneric/sub-milan03/anat’ -path-output ~/spineGeneric_results/ process_data.sh
Traceback (most recent call last):
File “/home/sahar/sct_4.3/scripts/sct_run_batch.py”, line 151, in
with multiprocessing.Pool(jobs) as p:
File “/home/sahar/sct_4.3/python/envs/venv_sct/lib/python3.6/multiprocessing/context.py”, line 119, in Pool
context=self.get_context())
File “/home/sahar/sct_4.3/python/envs/venv_sct/lib/python3.6/multiprocessing/pool.py”, line 167, in init
raise ValueError(“Number of processes must be at least 1”)
ValueError: Number of processes must be at least 1

duplicate of Sct_run_batch failed - SCT 4.3