mpv: file: Cannot open file '': Invalid argument

[NovumGain]

There doesn't seem to be any kind of interface, and if there should be one, it's not coming up. Inside the console, I see the following;

2024-10-15 07:17:57,925 [    INFO] player: Using libmpv1 playback backend.
2024-10-15 07:17:57,951 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: Begin connect
2024-10-15 07:17:57,951 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: Begin getAvailableServers
2024-10-15 07:17:57,951 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: connect has 1 servers
2024-10-15 07:17:57,951 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: begin connect_to_server
2024-10-15 07:17:57,952 [    INFO] JELLYFIN.jellyfin_apiclient_python.api: Sending get request to system/info/public
2024-10-15 07:17:57,991 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: calling onSuccessfulConnection with server Deus Ex Aeternae -God of Eternity-
2024-10-15 07:17:57,991 [    INFO] JELLYFIN.jellyfin_apiclient_python.api: Sending get request to system/info
2024-10-15 07:17:58,058 [    INFO] JELLYFIN.jellyfin_apiclient_python.client: User is authenticated.
2024-10-15 07:17:58,058 [    INFO] JELLYFIN.jellyfin_apiclient_python.ws_client: Websocket url: ws://10.147.20.1:8096/socket?api_key=REDACTEDREDACTED&device_id=25741688-aba8-45dc-967d-3489383483be
2024-10-15 07:17:58,068 [    INFO] websocket: Websocket connected
2024-10-15 07:17:58,069 [    INFO] JELLYFIN.jellyfin_apiclient_python.ws_client: --->[ websocket ]
2024-10-15 07:17:58,280 [    INFO] clients: Not connected yet, waiting 3 seconds...
2024-10-15 07:18:01,361 [ WARNING] clients: Client is not actually connected. (It does not show in the client list.)
2024-10-15 07:18:01,395 [    INFO] JELLYFIN.jellyfin_apiclient_python.ws_client: ---<[ websocket ]
2024-10-15 07:18:01,395 [    INFO] Jellyfin.jellyfin_apiclient_python.http: --<[ session/2206959446816 ]
2024-10-15 07:18:01,395 [ WARNING] clients: Partially connected. Retrying 1/3.
2024-10-15 07:18:02,401 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: Begin connect
2024-10-15 07:18:02,401 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: Begin getAvailableServers
2024-10-15 07:18:02,401 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: connect has 1 servers
2024-10-15 07:18:02,401 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: begin connect_to_server
2024-10-15 07:18:02,401 [    INFO] JELLYFIN.jellyfin_apiclient_python.api: Sending get request to system/info/public
2024-10-15 07:18:02,416 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: calling onSuccessfulConnection with server Deus Ex Aeternae -God of Eternity-
2024-10-15 07:18:02,416 [    INFO] JELLYFIN.jellyfin_apiclient_python.api: Sending get request to system/info
2024-10-15 07:18:02,435 [    INFO] JELLYFIN.jellyfin_apiclient_python.client: User is authenticated.
2024-10-15 07:18:02,435 [    INFO] JELLYFIN.jellyfin_apiclient_python.ws_client: Websocket url: ws://10.147.20.1:8096/socket?api_key=REDACTEDREDACTED&device_id=25741688-aba8-45dc-967d-3489383483be
2024-10-15 07:18:02,445 [    INFO] websocket: Websocket connected
2024-10-15 07:18:02,446 [    INFO] JELLYFIN.jellyfin_apiclient_python.ws_client: --->[ websocket ]
2024-10-15 07:18:02,591 [    INFO] clients: Not connected yet, waiting 3 seconds...
2024-10-15 07:18:05,681 [ WARNING] clients: Client is not actually connected. (It does not show in the client list.)
2024-10-15 07:18:05,752 [    INFO] JELLYFIN.jellyfin_apiclient_python.ws_client: ---<[ websocket ]
2024-10-15 07:18:05,752 [    INFO] Jellyfin.jellyfin_apiclient_python.http: --<[ session/2206959939056 ]
2024-10-15 07:18:05,753 [ WARNING] clients: Partially connected. Retrying 2/3.
2024-10-15 07:18:06,765 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: Begin connect
2024-10-15 07:18:06,765 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: Begin getAvailableServers
2024-10-15 07:18:06,765 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: connect has 1 servers
2024-10-15 07:18:06,765 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: begin connect_to_server
2024-10-15 07:18:06,765 [    INFO] JELLYFIN.jellyfin_apiclient_python.api: Sending get request to system/info/public
2024-10-15 07:18:06,779 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: calling onSuccessfulConnection with server Deus Ex Aeternae -God of Eternity-
2024-10-15 07:18:06,779 [    INFO] JELLYFIN.jellyfin_apiclient_python.api: Sending get request to system/info
2024-10-15 07:18:06,792 [    INFO] JELLYFIN.jellyfin_apiclient_python.client: User is authenticated.
2024-10-15 07:18:06,792 [    INFO] JELLYFIN.jellyfin_apiclient_python.ws_client: Websocket url: ws://10.147.20.1:8096/socket?api_key=REDACTEDREDACTED&device_id=25741688-aba8-45dc-967d-3489383483be
2024-10-15 07:18:06,805 [    INFO] websocket: Websocket connected
2024-10-15 07:18:06,805 [    INFO] JELLYFIN.jellyfin_apiclient_python.ws_client: --->[ websocket ]
2024-10-15 07:18:06,922 [    INFO] clients: Not connected yet, waiting 3 seconds...
2024-10-15 07:18:09,993 [ WARNING] clients: Client is not actually connected. (It does not show in the client list.)
2024-10-15 07:18:10,022 [    INFO] JELLYFIN.jellyfin_apiclient_python.ws_client: ---<[ websocket ]
2024-10-15 07:18:10,022 [    INFO] Jellyfin.jellyfin_apiclient_python.http: --<[ session/2206959968112 ]
2024-10-15 07:18:10,023 [ WARNING] clients: Partially connected. Retrying 3/3.
2024-10-15 07:18:11,032 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: Begin connect
2024-10-15 07:18:11,032 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: Begin getAvailableServers
2024-10-15 07:18:11,032 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: connect has 1 servers
2024-10-15 07:18:11,032 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: begin connect_to_server
2024-10-15 07:18:11,032 [    INFO] JELLYFIN.jellyfin_apiclient_python.api: Sending get request to system/info/public
2024-10-15 07:18:11,042 [    INFO] JELLYFIN.jellyfin_apiclient_python.connection_manager: calling onSuccessfulConnection with server Deus Ex Aeternae -God of Eternity-
2024-10-15 07:18:11,042 [    INFO] JELLYFIN.jellyfin_apiclient_python.api: Sending get request to system/info
2024-10-15 07:18:11,060 [    INFO] JELLYFIN.jellyfin_apiclient_python.client: User is authenticated.
2024-10-15 07:18:11,061 [    INFO] JELLYFIN.jellyfin_apiclient_python.ws_client: Websocket url: ws://10.147.20.1:8096/socket?api_key=REDACTEDREDACTED&device_id=25741688-aba8-45dc-967d-3489383483be
2024-10-15 07:18:11,074 [    INFO] websocket: Websocket connected
2024-10-15 07:18:11,075 [    INFO] JELLYFIN.jellyfin_apiclient_python.ws_client: --->[ websocket ]
2024-10-15 07:18:11,380 [    INFO] clients: Not connected yet, waiting 3 seconds...
2024-10-15 07:18:14,472 [    INFO] clients: Actually connected now.
2024-10-15 07:18:28,649 [    INFO] mpv: mouse: Enabled shim menu mouse events.

2024-10-15 07:18:28,860 [   ERROR] mpv: file: Cannot open file '': Invalid argument

2024-10-15 07:18:28,860 [   ERROR] mpv: stream: Failed to open .

2024-10-15 07:18:33,868 [    INFO] mpv: mouse: Disabled shim menu mouse events.

2024-10-15 07:18:33,869 [   ERROR] mpv: file: Cannot open file '': Invalid argument

2024-10-15 07:18:33,869 [   ERROR] mpv: stream: Failed to open .

I am completely unsure why it's doing this -- Jellyfin Media Player functioned, but it didn't have the Discord Rich Presence that I'm looking for. I've searched far and wide for that sweet sweet rpc, but nothing functioned.. But this seems like my best hope -- and thus, I'm posting here.

With that said, I do have a temporary condition where I am, essentially, an idiot. So I may not understand high level topics, and I apologize for that.

Edit: Oh, and I'm running 10.9.11.0