HDR Signal message and grey flash

I connected my PS4 Pro to my new tv and when i started playing Doom Eternal or watching Netflix on the hdmi 1 source,i noticed that it has a grey flash or blink every other minutes and the message: HDR Signal in the bottom right corner.The message appears consistently and the the  "blink" it s like a 1 milisecond flicker,then it s back to normal. I recently changed the hdmi cable with a certified short one from monoprice. What should i do? The tv model is : Philips43pus7556/12,4k hdr.

The problem persists only when the hdr is turned on by my ps4.