Same result when multiple calls at the same time

[AliAzG]

Hi Thomas, This is absolutely a great work! I ran this service on my local and it works fine, but I have an issue. when people call the service at the same time, we see each other's results. for example, when I upload a T-shirt picture and at the same time, my friend upload a shoe picture, I see shoe pictures instead of T-shirt pictures! Do you know what is the problem and how can I fix this? Thanks in advance.