Magento 2.1 ,the checkout is not working after applying the fix

[MaalyALkaraki]

first i would thank you for this fix , I applyed the fix for a Magento 2.1.7 site but the checkout is not working , the log has no reference for the fix ,they are using php7.1,

[HirokazuNishi]

Unfortunately, I didn't test it against Magento2.1.x, because Magento2.1.x was already EOL. You should update it to 2.3 or 2.4 first.

[MaalyALkaraki]

we apply it to magento 2.3.2 and unfortunately we have the same issue .

[HirokazuNishi]

Could you share me more details? How to reproduce? Any screen shots? JS error logs or PHP logs?

[MaalyALkaraki]

-after applying the fix ,it was stopping the add to cart from working, it will just keep spinning ,
-the php error is :
PHP Fatal error: Uncaught Error: Call to a member function getStoreId() on null
in /home/wwwsite /public_html/vendor/magento/module-quote/Model/Quote/Payment.php:286.
-on js error

[HirokazuNishi]

Please share me more.

• How was your browser's cookie?
• What browser did you use?

We use latest version for M2.3.x customers, but no one reported such case :(

[MaalyALkaraki]

1. The browser's cookies it test them when it was all on default mode for same-site cookie
2. I used the latest update for chrome browser .
   And i tried it on a Magento 2.3.4 :
   in this case the checkout wat working but the orders was not passed to the admin side , and the same site cookies did not turned to none in the browser after applying the fix .
   we got this php error
   

[HirokazuNishi]

Does your website run full HTTPS? SameSite=None is only allowed with Secure flag.

[MaalyALkaraki]

yes it is