What’s going on with my 2006 Highlander Hybrid?

A used 2006 HH with 153,000 lost power while driving in January 2020. Local (non-hybrid)mechanic able to start vehicle but the check hybrid system stayed on in vehicle. Vehicle does not drive. Battery? Invertor? Need recommendation for hybrid mechanic in Albany, NY area.
THANKS

There is a recall for the Intelligent Power Module located inside the inverter assembly, this may be what has failed on your vehicle.

Enter your vehicles VIN to check for incomplete recalls; https://www.nhtsa.gov/