juniper.device.command fails with "Type 'bool' cannot be serialized" on Ansible 2.18.5

[Niklasr69]

Summary

The juniper.device.command module fails with ConnectionError: Type 'bool' cannot be serialized when using connection: juniper.device.pyez with Ansible 2.17+ for certain commands (particularly clear commands).

Environment

• Ansible version: 2.18.5
• juniper.device collection version: 2.0.0
• Python version: 3.11
• junos-eznc version: 2.7.6
• ncclient version: 0.7.0
• Device: QFX series

Steps to Reproduce

Minimal playbook that reproduces the issue:

---
- name: Test juniper.device bug
  hosts: all
  connection: juniper.device.pyez
  gather_facts: false
  
  tasks:
    - name: This fails with bool serialization error
      juniper.device.command:
        commands:
          - "clear ddos-protection protocols statistics"
          - "clear ddos-protection protocols states"

Run with:

ansible-playbook -k -u <user> test_bug.yml --limit <qfx-device>

Expected Behavior

Commands should execute successfully and return results.

Actual Behavior

Task fails with error:

ansible.module_utils.connection.ConnectionError: Type 'bool' cannot be serialized.

Commands Affected

• clear commands (confirmed: clear ddos-protection protocols statistics, clear ddos-protection protocols states)
• Possibly other operational commands that trigger specific RPC code paths
• Regular show commands appear to work in most cases

Workaround

Add connection: local to the task to bypass the persistent connection:

- name: Clear ddos statistics and state
  juniper.device.command:
    commands:
      - "clear ddos-protection protocols statistics"
      - "clear ddos-protection protocols states"
  connection: local  # Workaround for bool serialization bug

[chidanandpujar]

Hi @Niklasr69 ,
Thank you,
PR is submitted by @dineshbaburam91 to track this issue

Thanks
Chidanand