The volume control error is not related to the crash - it comes from EmulationStation.
Assuming you're using RetroArch and one of the NES cores to stream, the problem is probably in RetroArch's streaming module. You haven't added any of the info asked https://retropie.org.uk/forum/topic/3/read-this-first, so it's difficult start diagnosing what's at fault here.
Contributions to the project are always appreciated, so if you would like to support us with a donation you can do so here.
Hosting provided by Mythic-Beasts. See the Hosting Information page for more information.