Sony HT ST5000 is not supporting SACD disks. So either listen SACD so that UHD player is connected directly to TV and lose TRUE HD and Dolby ATMOS or connect UHD player to soundbar and NOT listen SACD format:

Answer from Sony:

If you would like to play the SACD:

- Please connect both of the devices directly to the TV, as per page 74 from the link below:

https://www.sony.co.uk/electronics/support/res/manuals/4687/46878383M.pdf

If you would like to play the Dolby Atmos and Dolby TrueHD:

- Please connect the HDMI ARC from TV to soundbar ARC, and HDMI connection from the Player to the sound bar.

It will not be possible to play both of the signals through one connection map, as this is systems limitations. However, your feedback will be raised for future development.