Cookies Misusing the Recommended “sameSite“ Attribute

Hi Everyone,

I am looking after a site, (sadly based upon), CI v2.1.0.  

I have just noticed in Firefox's console the following: "Some cookies are misusing the recommended “sameSite“ attribute".  There is no such entry in Chrome's console window.  M$ Edge, well, Dev tools window fails 

In short, it is "Cookie “name” will be soon rejected because it has the “sameSite” attribute set to “none” or an invalid value, without the “secure” attribute.
It looks it applies to google analytics cookies also, "Cookie “_ga” will be soon rejected because it has the “sameSite” attribute set to “none” or an invalid value, without the “secure” attribute.".

Should I been concerned that the site will not function in the future, when browsed with Firefox?  If so, how do I fix this?
Do I need to extend a core library to add the secure attribute, or modify the sameSite attribute?


Thanks in advance.