Continuous beep when I start the controller

nono

Hello,
when I turn on my controller there is a continuous beep and I cannot change the reset signal to ready, I press reset but nothing changes.
my mpg is not connecting i tried by disconnecting my external estop but nothing changes, has anyone ever had this problem or have any idea to fix it?
Thanks for your help

nono

thank you AndreyB for your answer, I solved my problem which came from the connection with the external Estop.