After the initial failed repair attempt using thin wire, a Flex PCB was designed to splice into the stubs of the original flex PCB going to the motor and sensor.

JLCPCB.com was used to make the cables, but other suppliers could be used. The second picture shows the manufacturing details.

See https://github.com/mostlyhorses/XL1406_A... for the PCB gerber files

You will want at least 3 cables so you have something to practice on.