Chrome Distrusts SSL Certificates

One of the websites I have been working on has been displaying an error in the console. The error reads as follows.

The SSL certificate used to load resources from https://example.com will be distrusted in M70. Once distrusted, users will be prevented from loading these resources. See https://g.co/chrome/symantecpkicerts for more information.

But what does this mean? Well, let's start by looking at the link provided.

What feeling does this article give you?
Joy
Disgust
Fear
Anger
Sadness

#hashtags to follow:

SSL [+]   

More #news: