Assertion failing during copy

[ynbh]

Heya! Rust noob here. I was trying to make a basic CLI app, and came across an issue while using arboard for copying the image to clipboard.

For some reason, every time I try to copy an image, it throws me this error:

thread 'main' panicked at 'assertion failed: !result.is_null()

I don't know what I'm doing wrong, but here's the code for it:

use arboard::{Clipboard, ImageData};
use imagesize::size;
use std::fs;

fn main() {
    let mut ctx = Clipboard::new().unwrap();

    let file_path = "./temp/Q0w4OleUkPoTRS7KGCZIJP1LV7fZPT.jpg";

    let contents = fs::read(file_path).expect("Should have been able to read the file");

    let (width, height) = match size(file_path) {
        Ok(dim) => (dim.width, dim.height),
        Err(_why) => (19, 19),
    };

    let img_data = ImageData {
        height,
        width,
        bytes: std::borrow::Cow::Borrowed(contents.as_ref()),
    };

    ctx.set_image(img_data).unwrap();

    println!("Done!")
}

Help towards the right direction would be appreciated! Thanks!