Not displaying | WordPress.org

Hi! I installed this plug-in and tried it on one of my posts, but it only shows ‘MusicSheetViewerPlugin 4.1’ in white, no music. I then deactivated all my plug-ins except for Music Sheet Viewer, and switched to the default 2024 WordPress theme that came with the installation, but it still didn’t show up. Is there anything else I can do to get the music to show up or troubleshoot the problem?

Thank you.

The page I need help with: [log in to see the link]