troubleshoot help: karabiner-elements complex modifications not working

[chanheng01]

System details:

• Karabiner-Elements version 14.13.0
• MacOS: Sonoma 14.3

Problem Statement:
I created two complex modifications to map Thinkpad USB keyboard buttons to specific keyboard shortcuts on Mac OS; however, they are not working.

Details:

• Two rules were created
  • Mute button mapping
  • Lock Screen button mapping
• No error was reported when saved
• Complex Modifications are not working

Additional Details:

• karabiner_grabber, karabiner_observer and Karabiner-EventViewer are activated in Input Monitoring
• Under Keyboard/Keyboard Shortcuts/Modifier Keys, Select Keyboard is set to "Karabiner DriverKit VirtualHIDKeyboard 1.7.0"

Mute button mapping:
{ "description": "Mute button mapping", "manipulators": [ { "from": { "pointing_button": "button16" }, "to": [ { "key_code": "a", "modifiers": [ "command", "shift" ] } ], "type": "basic" } ] }

Lock Screen button mapping:
{ "description": "Lock Screen button mapping", "manipulators": [ { "from": { "pointing_button": "button17" }, "to": [ { "key_code": "q", "modifiers": [ "control", "command" ] } ], "type": "basic" } ] }