Can you provide a C++SDK for Rhino6.27?

Can you provide a C++SDK for Rhino6.27?Thank you.

https://files.mcneel.com/dujour/exe/202006/rh67sdk_6.27.20176.05001.msi

@andy Thank you very much for your reply. It seems that the link has expired. Do you have a new link?

NoSuchKey

The specified key does not exist.

dujour/exe/202006/rh67sdk_6.27.20176.05001.msi

ZHH0HPZD7YTYE7P5

KxzxqITQDtIdXLoVDD2ivvfAfXk//h4hcjI/l+n31jGKZ2yW14gYPzoN5KAl9QaG8sPCR2VK0onPo4IWaWMmJfZuiJF7nhXV

I got these errors, can you help me again and give me a 6.27 SDK?I really need