Wrong number of arguments for 'hset' command

Got this error after bench update ,occurs while changing user password or assigning any task to any user.

wU���3F���?��΋>=?�?k�6���84)?Q^D5?��?D�$�A|t�� ,�?�?��d�]�??�!ё�O/�ґD� ���?b?�?0�?�m��!�>?�?5��2��%���J�P?f��?4=��\���u�25X?�ȸ��rx��ĵC’�?����?�k?>�?����H�?Vp�V*R’?SH"�S�\��v����2�������|o������$=�? origin default description frappe.utils.background_jobs.execute_job(event=None, is_async=True, job_name=‘frappe.core.doctype.user.user.create_contact’, kwargs={‘user’: , ‘ignore_mandatory’: True}, method=‘frappe.core.doctype.user.user.create_contact’, site=’[]’, user=‘Administrator’) enqueued_at 2020-05-29T06:24:19.459492Z started_at ended_at timeout 300 status queued) of pipeline caused error: wrong number of arguments for ‘hset’ command