Import deno.land/x/event_emitter Not Found

When I tried to import deno-htmlparser2 from https://deno.land/x/htmlparser@v4.1.1/htmlparser2/index.ts, I got this error:
```
error: Import 'https://deno.land/x/event_emitter/mod.ts' failed: 404 Not Found
    at https://deno.land/x/htmlparser@v4.1.1/htmlparser2/Parser.ts:2:0
```

Is it supposed to be https://deno.land/x/events ?