Code
NT: urn:schemas-denon-com:service:ErrorHandler:1
NTS: ssdp:alive
SERVER: LINUX UPnP/1.0 Denon-Heos/207995
USN: uuid:aa9cbd29-d976-17fd-0080-000678679b92::urn:schemas-denon-com:service:ErrorHandler:1
2023-03-04 13:53:50.029 T:1142 info <Platinum>: Skipped 1 duplicate messages..
2023-03-04 13:53:50.029 T:1142 info <Platinum>: [platinum.inputdatagramstream]: PLT_InputDatagramStream received 609
2023-03-04 13:53:50.029 T:1142 info <Platinum>: [platinum.inputdatagramstream]: PLT_InputDatagramStream requested 4096, consumed 609, left 0
2023-03-04 13:53:50.029 T:1142 info <Platinum>: [platinum.core.ctrlpoint]: Device "AiosServices" expiration time renewed..
2023-03-04 13:53:50.029 T:1142 info <Platinum>: [platinum.core.devicehost]: Ignoring NOTIFY request from 10.0.4.111:44576
Do you go LE -> AVR -> TV? If yes, do LE -> TV wiring for testing.
PS: I assume you are using CEC for remote control.