Error while Making HTTP Call

I am getting an error while making a http while fetching the query parameter as expression. I passed same query parameters as raw values in that case http call is working fine. I am not able to understand why there is error while using query parameter as expression.

Hi @Mustafa_Ali, it’ll be rather tricky to understand why a specific service responds with a 400 error. Are you by any chance running your node for multiple items? If so, the problem might be similar to what has been described here: Loop the url with a different parameter - #3 by MutedJam