[Bug] Unable to calibrate ESC - told to disconnect battery despite no battery connected

[Daidalos94]

Describe the bug

As described, am using firmware 1.15.2 which is the latest on Qgroundcontrol auto firmware update (Although qground control states as 1.15.4 but upon upgrade, it became 1.15.2). Have also tried on a 1.15.0 firmware. When trying to calibrate my ESC through Qgroundcontrol power tab, i was told to remove batteries as shown in the screenshot below. However, My pixhawk 6X and power module is not connected to any batteries. Have tried doing the same for a pixhawk 6X with firmware 1.14.3 and managed to calibrate esc just fine on Qgroundcontrol. Anyone encountered the same issue? And any way to fix this besides going to an older firmware or manually calibrating my ESC?

To Reproduce

No response

Expected behavior

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Screenshot / Media

Flight Log

No response

Software Version

1.15.2
QGC 4.4.3

Flight controller

Pixhawk 6X (holybro)

Vehicle type

Multicopter

How are the different components wired up (including port information)

Pixhawk 6X to PM07 holybro power module using ADS1115 ADC

Additional context

No response