Error 4xx while downloading a file through API which has second word's intials H for eg. (DX Haley)

Ranjodh, can you share the code that actually makes the request? It looks like that library just returns a URL to you, and I suspect there's an error in the code that escapes the URL and makes the HTTP request. Maybe you can share the relevant part of your code?

Denys, similarly, you'll need to share the code you're using to make the request. (Are you using OAuth 1? HMAC signing or PLAINTEXT? Or OAuth 2?)

In both cases, I suspect a URL escaping error, but it's likely that the exact source is different, since you're writing code in different languages and with different libraries.