I’m working on two projects, the first project(.net 5.0) need to request the bytes of a file to the second project(.net 8.0).

Method on First project:

public async Task<byte[]> GetTemplateAsync()
{
    try
    {
        string uri = $"{_uri}GetTemplate";
        var result = await _httpClient.GetAsync(uri);

        if (!result.IsSuccessStatusCode)
        {
            throw new Exception(await result.Content.ReadAsStringAsync());
        }

        byte[] template = await result.Content.ReadAsByteArrayAsync();
    
        return template;
    }
    catch (Exception e)
    {
        throw new Exception(e.Message);
    }
}

Endpoint on Second Project:

[HttpGet("/GetTemplate")]
[Produces("application/octet-stream")]
public HttpResponseMessage GetTemplate()
{
    try
    {
        byte[] boletoTemplate = _templateService.GetTemplate();

        HttpResponseMessage response = new(HttpStatusCode.OK)
        {
            Content = new ByteArrayContent(boletoTemplate)
        };
        
        return response;
    }
    catch (NotFoundException ex)
    {
        return new HttpResponseMessage(HttpStatusCode.NotFound)
        {
            Content = new StringContent(ex.Message)
        };
    }
    catch (Exception ex)
    {
        return new HttpResponseMessage(HttpStatusCode.BadRequest)
        {
            Content = new StringContent(ex.Message)
        };
    }
}

The result from _httpClient.GetAsync(uri) on First project method is Not Acceptable. This is produced when I put the [Produces("application/octet-stream")] on the Second project’s endpoint, when I change to application/json the First project result is Ok but the file bytes are all different.