import { Aleph } from "https://deno.land/x/aleph@v0.3.0-beta.4/server/mod.ts";
check the file whether it is a scoped module.
import { Aleph } from "https://deno.land/x/aleph@v0.3.0-beta.4/server/mod.ts";
check the file whether it is a scoped module.