Okay, it's seems to be solved now.
I should've used JSON's [getStr](https://nim-lang.org/docs/json.html#getStr,JsonNode,string) proc instead of doing $(...).
Okay, it's seems to be solved now.
I should've used JSON's [getStr](https://nim-lang.org/docs/json.html#getStr,JsonNode,string) proc instead of doing $(...).