Once the code is inserted and saved, refresh the GSDT to run the test again to ensure that the product schema and aggregateRating is showing up well. There should not be any errors present in the schema In cases where metafield is not present in a Shopify store (syndicated stores) A different set of rich snippet codes needs to be installed, which rely on pulling the review data from widget directly instead of the Shopify metafields:

Puffco Peak Pro Chamber

Regular price $90.00
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Shipping calculated at checkout.

Puffco Peak Pro Chamber

The Peak Pro chamber is the engine for the entire device. A unique sensor embedded inside of the chamber communicates with your Peak Pro, keeping your temperature exactly where it needs to be - regardless of how hard you inhale or how much oil you put in.

The end result is the most consistent and controlled dab experience ever.

NEVER ATTEMPT TO DISASSEMBLE THE CHAMBER, THIS WILL BREAK IT! 

TO CLEAN: UNSCREW, AND DROP THE ENTIRE THING INTO 99% ISO ALCOHOL.