error in google snippet check tool

I got a feeling it is either a theme or plugin conflict. Does it work on the default theme without any other plugins activated in the first place?

I tried whit 4 template
Jupiter
Avada
DIVI
Be Theme

if i deactivate the plugin all is ok, but if activate it, i got a problem you can test
2 different blog post

one whit your plugin ad another one without it, you can see I got problem activating it

This Blog Post is without:

this one with Wp-Post Rating activated:
https://www.macriweb.com/ecommerce-quanto-mi-costi/

test in google:

https://search.google.com/structured-data/testing-tool/u/0/#url=http%3A%2F%2Fwww.macriweb.com%2Fecommerce-quanto-mi-costi%2F

this one clear:

https://www.macriweb.com/ecommerce-come-trovare-idea-vincente/

this is the test in google:

https://search.google.com/structured-data/testing-tool/u/0/#url=http%3A%2F%2Fwww.macriweb.com%2Fecommerce-come-trovare-idea-vincente%2F

Try to use the dev version as it is fixed. Delete all files in wp-content/plugins/wp-postratings, download https://github.com/lesterchan/wp-postratings/archive/master.zip, and upload the contents back to wp-content/plugins/wp-postratings.

Thanks on this way the major problelm are fixed now the error I get is:

For the review is not been specified the reviewed item.

https://search.google.com/structured-data/testing-tool/u/0/#url=https%3A%2F%2Fwww.sarao.it%2Fecommerce-quanto-mi-costi%2F

maybe is mistake a code that say this review is for article …. isn’t?

Weird, you don’t need a review item for it. Maybe it is one of the plugin or theme that is conflicting with the Rich Snippet?

On the default theme with WP-PostRatings it works fine.

https://search.google.com/structured-data/testing-tool/u/0/#url=https%3A%2F%2Flesterchan.net%2Fwordpress_dev%2F2015%2F04%2F24%2Ftest-emoji%2F