I am using Sitecore 9.1.1 with SXA 1.81.
I need to set the Grid- Component Layout in the presentation details for my template standard values, but I am seeing the Component Layout as blank
Does anyone have any idea about this?
Do not use Standard Values for presentation when working with SXA. This is not how you should work. In SXA you should go with Page and Partial designs. For more details, take a look here: https://doc.sitecore.com/developers/sxa/19/sitecore-experience-accelerator/en/designing.html.
There are more things which won't work on the Standard Values as there is no site context. Most of the SXA features need site context to work.