Trouble with control plane EE ansible/awx-ee:0.6.0 in AWX 19.3.0

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I have AWX 19.3.0 running. I have a custom EE based on built with ansible-builder (based on “ansible-runner:stable-2.9-latest” not “ansible/awx-ee”, config below) which works which is used (successfully) as the EE for job_template execution and inventory source updating. However with “control_plane_ee_image” set to “ansible/awx-ee:0.6.0” the update of a dynamic inventory against Nautobot fails as below (debug level 3) while when set to “ansible/awx-ee:latest” everything seems to work fine.

Are there any additional troubleshooting steps that I can take to see the cause of the Nautobot inventory sync failure?

I think the only significant difference between “develop” and “0.6.0”, from “https://github.com/ansible/awx-ee/compare/0.6.0...devel”, is the source image of “receptor” which changes from “project-receptor/receptor:1.0.0a2” to “ansible/receptor:devel”. The former’s last update was 6 months ago and the latter has only a single image with the tag “latest”

I’m wondering what makes sense regarding the control plan EE. I don’t like to use images with mutable tags such as “latest”. Should I build from scratch a control plane EE image which consumes a receptor image with an immutable tag or be patient and wait for an immutably tagged image of “ansible/awx-ee” which consumes an immutably tagged image of “ansible/receptor” and use “ansible/awx-ee:latest” in the meantime?

Stdout
ansible-inventory 2.9.24
config file = None
configured module search path = ['/home/runner/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
ansible python module location = /usr/local/lib/python3.8/site-packages/ansible
python version = 3.8.8 (default, Aug 25 2021, 16:13:02) [GCC 8.5.0 20210514 (Red Hat 8.5.0-3)]
setting up inventory plugins
host_list declined parsing /runner/project/nautobot.yml as it did not pass its verify_file() method
Skipping due to inventory source not existing or not being readable by the current user
auto declined parsing /runner/project/nautobot.yml as it did not pass its verify_file() method
yaml declined parsing /runner/project/nautobot.yml as it did not pass its verify_file() method
Skipping due to inventory source not existing or not being readable by the current user
ini declined parsing /runner/project/nautobot.yml as it did not pass its verify_file() method
toml declined parsing /runner/project/nautobot.yml as it did not pass its verify_file() method
[WARNING]: Unable to parse /runner/project/nautobot.yml as an inventory source
ERROR! No inventory was parsed, please check your configuration and options.
yaml declined parsing /runner/project/nautobot.yml as it did not pass its verify_file() method
Skipping due to inventory source not existing or not being readable by the current user
ini declined parsing /runner/project/nautobot.yml as it did not pass its verify_file() method
Skipping due to inventory source not existing or not being readable by the current user
toml declined parsing /runner/project/nautobot.yml as it did not pass its verify_file() method

Nautobot inventory source
nautobot.yml