Muse-Hub sound download not working on Arch

Issue type

Muse Sounds bug

Bug description

Downloading sounds via the muse-hub app from https://aur.archlinux.org/packages/muse-hub-bin (which is the deb from the official website repackaged as an Arch package) doesn't work. It always just displays the following error message in a popup:

Something went wrong, please try again later

ID: cba44cea-47bc-4c61-bf57-abcb4e998bc9
Type: Instrument

The muse-hub service is running (output from systemctl):

● muse-hub.service - Muse Hub Helper Service
     Loaded: loaded (/usr/lib/systemd/system/muse-hub.service; enabled; preset: disabled)
     Active: active (running) since Mon 2023-11-06 10:31:53 CET; 38min ago
   Main PID: 703 (muse-hub-servic)
      Tasks: 14 (limit: 19050)
     Memory: 100.9M
        CPU: 1.061s
     CGroup: /system.slice/muse-hub.service
             ├─703 /bin/sh /usr/bin/muse-hub-service
             └─707 /opt/muse-hub/Muse.Service

But it displays the following kind of error message:

Nov 06 11:13:05 orion muse-hub-service[707]: 2023-11-06 11:13:05.1504|INFO|Muse.Service.MuseClientConnection|Processed message!
Nov 06 11:13:05 orion Muse.Service[707]: 2023-11-06 11:13:05.1504|INFO|Muse.Service.MuseClientConnection|Processed message!

The corresponding message in client_log.txt is:

11:13:05.1467|INFO|Muse.Client.Common.Services.MuseBackgroundService|Sending message to background service - Type: Muse.Common.Messages.Actions.StartDownloadAction, Data: ItemId=cba44cea-47bc-4c61-bf57-abcb4e998bc9;ItemType=Instrument;P2PInfoFile=https://muse-webservice.azurewebsites.net/musedownload/library-packages/6dbfa47f-c2fa-4242-96b3-c85c5ac69bdb;Version=0.2.4;ItemName=Muse Harp

So it looks like something is wrong with the download URL. I can download the sounds just fine in the Mac version on the same LAN, so it's not a firewall issue (no firewall is running locally on the Linux machine). I also manually created the requisite directories for the default install location and made them user-writable, that didn't help either.

Steps to reproduce

1. Install the muse-hub-bin package from the AUR (https://aur.archlinux.org/packages/muse-hub-bin).
2. Launch muse-hub.
3. Try to get any of the sounds.
4. Error popup as described above.

Screenshots/Screen recordings

MuseScore Version

4.1.1

Regression

I don't know

Operating system

Manjaro (Arch) on Intel (x86_64)

Additional context

No response