GStreamer Error

[P8ntBal1551]

I'm getting the following errors:

WARNING  2024-08-09 03:37:31,547 [1:Audio-2] mopidy.audio.actor
  Setting GStreamer state to GST_STATE_PLAYING failed
ERROR    2024-08-09 03:37:31,548 [1:MainThread] mopidy.audio.gst
  GStreamer error: Could not open resource for reading.
WARNING  2024-08-09 03:37:31,548 [1:Core-7] mopidy.core.tracklist
  Track is not playable: local:track:song1.flac
WARNING  2024-08-09 03:39:42,620 [1:Audio-2] mopidy.audio.actor
  Setting GStreamer state to GST_STATE_PLAYING failed
ERROR    2024-08-09 03:39:42,620 [1:MainThread] mopidy.audio.gst
  GStreamer error: Could not open resource for reading.
WARNING  2024-08-09 03:39:42,620 [1:Core-7] mopidy.core.tracklist
  Track is not playable: local:track:song2.flac

I have the default audio output on the container

[audio]
output = audioresample ! audioconvert ! audio/x-raw,rate=48000,channels=2,format=S16LE ! wavenc ! tcpclientsink host=snapserver

Lastly I have the snapcast settings set to the external IP of the server, pointed at the port 1780. Mopidy is returning it as "Connected"

Any help would be greatly appreciated, thank you.