No Position Lock using Leddar One and no GPS

I’m trying to have my Intel Aero RTF takeoff and land. I am currently running v1.8.2 of the PX4 firmware. I have also added a LeddarOne sensor. I am flying indoors so there is no GPS lock.
Using QGC, I can perform the preflight checks and arm the drone. I try to have QGC perform the takeoff but the command is rejected. The Mavlink Console says, “rejecting takeoff, no position lock yet.” I’m not sure how to obtain the position lock prior to takeoff, then successfully take off and land.
I have armed the drone with the rotors off and pick up the drone to see if I can switch to Position mode, and that works for a brief period before rejecting to Altitude mode.