Esc beeping on HITL Airframe

Im connecting my Pixhawk 2.4.8 with v1.10.1.
Im doing tests with JmavSim and QGC and every time I change the airframe to HITL mode and then connection the battery the esc keeps beeping. i tried to to ESC calibrtion but got “Battery unavailable” error message on QGC.
has anyone encountered this problem and know how to fix it?