entering the power saving mode shortly error on Mac Air M2

Can I ask if anyone using an external monitor has the "entering the power saving mode shortly" error when using cape C to HDMI and how to fix it? Searching on many portals, I find LG screens often have this error.

Mine is Mac Air M2 and LG monitor, checked the power source, reduced the frequency and resolution of all types but still can't, everything is normal when i use the hub