Retroarch on AndroidTV Bravia Dualshock 4 stops working

After installing RetroArch on my Bravia TV everything works fine.But after some time I get the message “100% wireless controller in port 0” or so.But it should be in port 1.Then nothing goes anymore.No controller,no telecommande.I have to uninstall RetroArch.And reinstall. Yes I have downloaded all additionell assets and autoconf. fils.It wont change anything. Would be another controller f.e from Logitech make it better.Thank you for your suggestions.