Errors with the product review add-on

Hello,
my developer asks me to post these errors so that I send him a response. Indeed it seems that some additional modules do not work when trying to update Litecart.

[quote][21-Sep-2020 17:24:24 Europe / Paris] Warning: Failed sending email" Product Review "in ~ / includes / entities / ent_email.inc.php on line 387
← ~ / includes / boxes / box_product_reviews.inc.php on line 89 in send ()
← ~ / vqmod / vqcache / vq2-includes_templates_default.catalog_views_box_product.inc.php on line 189 in include ()
← ~ / includes / templates / default.catalog / pages / product.inc.php on line 11 in include ()
← ~ / includes / entities / ent_view.inc.php on line 63 in include ()
← ~ / includes / entities / ent_view.inc.php on line 20 in _process_view ()
← ~ / vqmod / vqcache / vq2-pages_product.inc.php on line 394 in stitch ()
← ~ / includes / library / lib_route.inc.php on line 118 in include ()
← ~ / index.php on line 40 in process ()
Request: POST / medias-numeriques-c-12 / disco-night-fever-p-914? Category_id = 12 & product_id = 914 HTTP / 1.1
Host: www.toile-popart.fr
Customer: 188.95.55.49 (188.95.55.49)
User Agent: Mozilla / 5.0 (Windows NT 10.0; Win64; x64) AppleWebKit / 537.36 (KHTML, like Gecko) Chrome / 85.0.4183.102 Safari / 537.36
Referer: https://www.toile-popart.fr/medias-numeriques-c-12/disco-night-fever-p-914?category_id=12&product_id=914[/quote]

Finally this add-on seems to be working again. There was incompatibility with something else.

On the other hand, 0 translation and in addition it is necessary to validate the opinions in the catalog.

[quote]0 translation and in addition it is necessary to validate the opinions in the catalog.[/quote]
What does that mean?

Let's say that when you update Litecart, you lose the translations, you have to redo everything one by one. "obviously the previous translation table does not work"

These words are mine. This is what emerges from the criticism between me the client and my developer when we call.

Going from version 1.3.4 to version 2.2.4 is a horror, it's time consuming.
He is a good developer, yet he comes up against group attributes that he has to redo one by one by hand and which produce an error when placing a product in the cart. For this update, my developer has to start from scratch ... the update pretty much works when there is no data, but with a production site it's another matter ...

Having said that, I am talking about various issues I encountered updating Litecart and I am aware that I am not making a separate topic in the forum.
I'm just telling readers don't think it's easy to do a good update in Litecart.