lmctl 3.1 doesn't work on Python 3.6.8

[Teju-chitara]

[ec2-user@ip-172-31-30-164 cnf_amf_nokia]$ lmctl project push default

Push - cnf_amf_nokia at ./

--> Validate Sources
Validating assembly descriptor for cnf_amf_nokia
Checking descriptor found at: ./Descriptor/assembly.yml

Validating service behaviour for cnf_amf_nokia
No service behaviour found at: ./Behaviour

[amf] --> Validate Sources
[amf] Checking descriptor found at: ./Contains/amf/Definitions/lm/resource.yaml
[amf] Definitions directory found at: ./Contains/amf/Definitions
[amf] CP4NA orchestration definitions directory found at: ./Contains/amf/Definitions/lm
[amf] Resource descriptor found at: ./Contains/amf/Definitions/lm/resource.yaml
[amf] Lifecycle directory found at: ./Contains/amf/Lifecycle

--> Stage Sources
Staging assembly descriptor for cnf_amf_nokia at ./Descriptor/assembly.yml

Staging service behaviour for cnf_amf_nokia at ./Behaviour
Skipping - nothing to compile at ./Behaviour

[amf] --> Stage Sources
[amf] Staging Resource descriptor for amf-cnf_amf_nokia at ./Contains/amf/Definitions/lm/resource.yaml
[amf] Staging directory ./Contains/amf/Lifecycle

--> Compile Package
Compiling descriptor(s) for: cnf_amf_nokia
Skipping - nothing to compile at ./_lmctl/staging/Behaviour

[amf] --> Compile Package
[amf] Creating Resource package for amf: amf-cnf_amf_nokia.zip
[amf] Adding directory to Resource package: Definitions
[amf] Adding directory to Resource package: Lifecycle

--> Finalise Package
Error: dump_all() got an unexpected keyword argument 'sort_keys'
[ec2-user@ip-172-31-30-164 cnf_amf_nokia]$ lmctl --version
lmctl, version 3.1.0
[ec2-user@ip-172-31-30-164 cnf_amf_nokia]$ python3 --version
Python 3.6.8

[dvaccarosenna]

Hi @Teju-chitara, thanks for the details.

Could you verify the version of PyYAML installed on your system?

pip show pyyaml

[Teju-chitara]

Below is the output i am getting

[ec2-user@ip-172-31-30-164 ~]$ pip3 show pyyaml
Name: PyYAML
Version: 3.12
Summary: YAML parser and emitter for Python
Home-page: http://pyyaml.org/wiki/PyYAML
Author: Kirill Simonov
Author-email: xi@resolvent.net
License: MIT
Location: /usr/lib64/python3.6/site-packages
Requires:
[ec2-user@ip-172-31-30-164 ~]$

[dvaccarosenna]

Ok, that's interesting. Lmctl requires PyYAML>=5.3.0,<6.0 so I think if you upgrade PyYAML to a 5.x version it might resolve this?

pip install pyyaml -U

or

pip install pyyaml==5.4.1