Get image from automated download

error: Uncaught (in promise) Error: The filename, directory name, or volume label syntax is incorrect. (os error 123): writefile 'C:\Users\titul\AppData\Local\Temp\deno_dwld2b5d29e3bc7dd136/E:\Arcunis\recipeImageMaker\stone.png'

import { download } from "https://deno.land/x/download@v2.0.2/mod.ts";
import { join } from "https://deno.land/std/path/mod.ts";
export default async function generateBlock(block: String) {
    await download("http://localhost:8000/renderer/index.html?material=" + block, {file: join(Deno.cwd(), block + ".png")});
}