How do I FIX Google Search Console Errors?

[DaveL1]

Hello,

I received a notification from Google that my product page has one error and 8 warnings.  How do I fix these? I can't seem to add them to the HTML directly.  They are referring to page:

https://www.smartrecirculationcontrol.com/store/p6/Smart_Recirculation_Control_V2_-_Smart_Phone_Conf...

Here is my google search console log.

[Bernadette3]

Is that the only product that is throwing the errors? Do any of those error lines give any additional information on a hover or dropdown?