Listing cloudinary folders from API Error: Invalid CLOUDINARY_URL scheme. Expecting to start with cloudinary

Hi,

I am trying to get list of folders in my cloudinary:

in my api controller I have:

[AllowAnonymous]
[HttpGet("folders/")]
public string GetFolders()
{
    Cloudinary cloudinary = new Cloudinary();
    return cloudinary.RootFolders().ToString();
}

and in my api service i have:

public PhotoService(IConfiguration config)
{
    Account account = new Account(
        config.GetSection("CloudinarySettings:CloudName").Value,
        config.GetSection("CloudinarySettings:ApiKey").Value,
        config.GetSection("CloudinarySettings:ApiSecret").Value
    );
    cloudinary = new Cloudinary(account);
}

I am getting this error:

"errorCode": 500,
    "errorMessage": "Invalid CLOUDINARY_URL scheme. Expecting to start with 'cloudinary://'",
    "errorDetails": "   at CloudinaryDotNet.ApiShared..ctor(String cloudinaryUrl)\r\n   
at CloudinaryDotNet.Api..ctor()\r\n   at CloudinaryDotNet.Cloudinary..ctor()\r\n   
at WebAPI.Controllers.FamilyDocumentsController.GetFolders() 
at lambda_method2(Closure, Object, Object[])\r\n   
at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.