traceback

ansible-doc -vvv --list cisco.ios.ios_facts

ansible-doc 2.10.2
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/home/jml/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/jml/.local/lib/python3.6/site-packages/ansible
  executable location = /home/jml/.local/bin/ansible-doc
  python version = 3.6.9 (default, Oct  8 2020, 12:12:24) [GCC 8.4.0]
Using /etc/ansible/ansible.cfg as config file
ERROR! Unexpected Exception, this is probably a bug: too many values to unpack (expected 2)
the full traceback was:

Traceback (most recent call last):
  File "/home/jml/.local/bin/ansible-doc", line 123, in <module>
    exit_code = cli.run()
  File "/home/jml/.local/lib/python3.6/site-packages/ansible/cli/doc.py", line 215, in run
    add_collection_plugins(self.plugin_list, plugin_type, coll_filter=coll_filter)
  File "/home/jml/.local/lib/python3.6/site-packages/ansible/cli/doc.py", line 55, in add_collection_plugins
    for b_path in b_colldirs:
  File "/home/jml/.local/lib/python3.6/site-packages/ansible/collections/list.py", line 70, in list_collection_dirs
    (nsp, coll) = coll_filter.split('.')
ValueError: too many values to unpack (expected 2)

version

ansible-doc 2.10.2
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/home/jml/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/jml/.local/lib/python3.6/site-packages/ansible
  executable location = /home/jml/.local/bin/ansible-doc
  python version = 3.6.9 (default, Oct  8 2020, 12:12:24) [GCC 8.4.0]