"Pasteboard contained types ( ), but service expects types" on MacOS

[S1lander]

I am maintaining a Tauri app that's solely meant to be a Windows Desktop App, and I've been developing mostly on a Windows machine, but recetly switched over to MacOS. I have this function that I am invoking from the frontend:

#[tauri::command]
fn select_path_in_file_explorer(pathname: &str) {
    let formatted_path = pathname.replace('/', "\\");
    println!("Selecting path: {}", formatted_path);
    showfile::show_path_in_file_manager(formatted_path);
}

The argument pathname includes the filetype extension, which gives me this error/output on MacOS (works fine this way on Windows):

Selecting path: \Users\user\my folder\my_file.pdf
2025-02-04 20:33:38.948 myApp[20816:209182] Pasteboard contained types (
), but service expects types (
    "public.utf8-plain-text",
    "dyn.agu8y6y4grf0gn5xbrzw1gydcr7u1e3cytf2gn",
    "public.url",
    "com.apple.cocoa.pasteboard.multiple-text-selection"
)

I am a bit confused by the error contained types, but service expects types.
What am I doing wrong here? Thanks!