Magento 2.3.4 paypal error

[zerod10]

Hi everyone,

I'm trying to integrate PayPal as a payment method in my site.

if I try to make a payment the site give me an error in Italian, something like:

"Error on our server. Try again later"

The browser console give me a message:

"Failed to load resource: the server responded with a status of 500 (Internal Server Error)"

If I click on tantalizer message give me this:

{"success":false,"error_message":"Il gateway di PayPal ha rifiutato la richiesta. Invalid token (#10410: Invalid token)."}

Some one can help me please? 

Thanks

[Sanjay Jethva]

Hello @zerod10 

Please follow this guide for the solution: 

https://support.magento.com/hc/en-us/articles/360039451972-2-3-4-PayPal-Issue-Hotfix

I hope it helps you.

[zerod10]

Hi, thanks for you reply, with patch I have to apply?

thanks again

[Sanjay Jethva]

@zerod10 , glad to be of some help

Yes, you can apply the patch.

Please make sure to take the file and database backup before applying the patch.

Thank you.

[zerod10]

fount it, was: 

PayPal_Express_Checkout_issue_fix_2.3.4_github-2020-02-13-12-36-34.patch

But now on termina it give me that error: 

can't find file to patch at input line 8
Perhaps you should have used the -p or --strip option?
The text leading up to this was:
--------------------------
|Index: app/code/Magento/Paypal/Model/Api/Nvp.php
|IDEA additional info:
|Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
|<+>UTF-8
|===================================================================
|--- app/code/Magento/Paypal/Model/Api/Nvp.php (revision 0595b0dbe57711bccb5cdb049bdae9ac8ba8b0cc)
|+++ app/code/Magento/Paypal/Model/Api/Nvp.php (date 1581448283375)
--------------------------
File to patch:

[Sanjay Jethva]

@zerod10 

Please try manually to apply the patch.

Thank you.

[zerod10]

How?

[starlyns]

Lol I love how they reply with this vague answers and then want you to accept as solutions so they can get points. 

I been using magento 2 for a long time and still don't know how to apply those patches.

[Sanjay Jethva]

Hey @zerod10 

Please follow https://github.com/magento/magento2/issues/26698

Thank you.

[rui_silva1]

Hey @starlyns ,

Might be late but i think the best way to apply (by my experience) is manually, rare the time I can apply it without errors if it isn't by manual so to apply manually download the file .patch then open all you'll see something like this

--- a/vendor/magento/module-paypal/Model/Api/Nvp.php	(revision 0595b0dbe57711bccb5cdb049bdae9ac8ba8b0cc)
+++ b/vendor/magento/module-paypal/Model/Api/Nvp.php	(date 1581448283375)
@@ -1512,17 +1512,17 @@
         }
         // attempt to fetch region_id from directory
         if ($address->getCountryId() && $address->getRegion()) {
-            $regions = $this->_countryFactory->create()->loadByCode(
-                $address->getCountryId()
-            )->getRegionCollection()->addRegionCodeOrNameFilter(
-                $address->getRegion()
-            )->setPageSize(
-                1
-            );
+            $regions = $this->_countryFactory->create()
+                ->getRegionCollection()
+                ->addCountryFilter($address->getCountryId())
+                ->addRegionCodeOrNameFilter($address->getRegion())
+                ->setPageSize(1);
             $regionItems = $regions->getItems();
-            $region = array_shift($regionItems);
-            $address->setRegionId($region->getId());
-            $address->setExportedKeys(array_merge($address->getExportedKeys(), ['region_id']));
+            if (count($regionItems)) {
+                $region = array_shift($regionItems);
+                $address->setRegionId($region->getId());
+                $address->setExportedKeys(array_merge($address->getExportedKeys(), ['region_id']));
+            }
         }
     }

The first lines until @@ tells the file it's changed and if it changes the name, usually it's the same so in this case the next line are applied to 

/vendor/magento/module-paypal/Model/Api/Nvp.php

and the second is the same path so the file stays with the same name.

Getting to the code itself after the @@ tells you the lines so in this case line 1512 go to that line all you're suppose to see all the code that is after without the ones with the + at the beginning.

So you know where to do the changes, then, remove all the lines that starts with - and add all the lines that starts with +, in this case you should have at those lines 

if ($address->getCountryId() && $address->getRegion()) {
           $regions = $this->_countryFactory->create()->loadByCode(
                $address->getCountryId()
            )->getRegionCollection()->addRegionCodeOrNameFilter(
                $address->getRegion()
            )->setPageSize(1);
            $regionItems = $regions->getItems();
            $region = array_shift($regionItems);
            $address->setRegionId($region->getId());
            $address->setExportedKeys(array_merge($address->getExportedKeys(), ['region_id']));
         }
     }

(the lines starting with - and the ones with nothing at the start) and after the changed you'll be with

if ($address->getCountryId() && $address->getRegion()) {
            $regions = $this->_countryFactory->create()
                ->getRegionCollection()
                ->addCountryFilter($address->getCountryId())
                ->addRegionCodeOrNameFilter($address->getRegion())
                ->setPageSize(1);
             $regionItems = $regions->getItems();
            if (count($regionItems)) {
                $region = array_shift($regionItems);
                $address->setRegionId($region->getId());
                $address->setExportedKeys(array_merge($address->getExportedKeys(), ['region_id']));
            }
         }
     }

Sorry it may not the that clarifying but hope it helps someday, but it's a time consuming task when you have a .patch the has line 5k lines of code to change.