Code for reading battery chassis stats is not working (Arduino IDE) - Battery Not Initialised!

When I use the provided code from the wiki Wio Terminal Chassis Battery(650mAh) - Seeed Wiki

The screen always displays: Battery Not Initialised!
And the serial monitor:
Error: Unable to communicate with BQ27441.
Check wiring and try again.
(Battery must be plugged into Battery Babysitter!)

The chassis does work and powers the WIO Terminal. Also tried i2c scanner code and the BQ27441 (nor any other device) shows up.

Any ideas how to fix this?

Kind regards!

Hi, can you tell us the working status of the power indicator on the battery extension board? Does it have enough power for you to use it?