Headers are read-only, response has already started

Hi, When debug lara in aspnetcore web project I have the next fail : Headers are read-only, response has already started

trace in the file MiddlewareCommon.cs function

public static async Task WriteBuffer(HttpContext http, byte[] buffer)
        {
            try
            {
                await http.Response.Body.WriteAsync(buffer.AsMemory(0, buffer.Length));
                http.Response.ContentLength = buffer.Length;
            }
            catch (Exception ex)
            {
                throw;   //here put break point
            }
        }