Paypal Prestashop: how and to whom should you entrust bug correction ?

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How to fix Paypal error on Prestashop 1.7 "unit_amount quantity" ?

Paypal error preventing payment from prestashop Click on Paypal to see its error message. Paypal Error: "Should equal the sum (unit_amount * number) over all items in a given purchase unit." Login to your backoffice and go to store settings. Then go to General Settings. You need to go to the "type of rounding" drop-down menu. Rounding allows you to determine a decimal to facilitate the calculation during the ordering process. Prestashop 1.7 indicated that the rounding of each item is: Before the total is calculated, the price of each item will need to be rounded. Each copy of the same item will be added to the total before it is calculated. This will allow you to calculate the total that can be reported in Paypal.
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Paypal error notice connected6.php on Prestashop 1.7.

We are now used to errors in the Prestashop Paypal module. It's annoying, so I'm sharing the solution! I figured a simple update would fix my client at the start of the error. In the end, it didn't work. Also know that I have this problem on Prestashop 1.7. A blank page appears when you activate your Paypal account in the module. This is regardless of whether you have enabled the error. Many errors are displayed, "notices" with an error in the connected6.php file. The solution comes from modifying a class in the module at this location: "paypal/classes/MethodEC.php". This will allow you to log in to the back office and enter your account information. Keep a backup of this file and overwrite it if necessary.
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Prestashop Paypal payment error message while payment ok: case encountered.

Paypal caused me 2 successive problems. The error message for the first order is "The price paid on PayPal is not the same as on PrestaShop". Despite the fact that the payment was successfully processed in my paypal account, so I had to manually enter "payment accepted". The second is weirder. Paypal calculated the shipping costs higher than the order. That's what I don't understand. For another, "Attention 5.00 EUR instead of 4.85 EUR" However, the payments are transmitted to paypal. Customers receive an error message and place another order. I am then obliged to reimburse the duplicates or triplicates. I couldn't find a solution to this problem which appeared suddenly (maybe after the paypal update). I am on prestashop 1. The prices for which there was a problem were around .99EUR, rounded by paypal to the euro. Do you know what I should do? Additional comment: I am very surprised by the layout of this new PayPal module. It is particularly poorly laid out.
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Prestashop: Paypal orders do not go back to the back office.

If you use Paypal to create your Prestashop, and your customers place an order, it does not appear in the back office. In most cases, the problem can be solved by Paypal. It is best to replace your module with a native module if you have not modified or worked on the Paypal module files. Sometimes the problem is caused by an encoding error. To solve this problem, you must log in to your Paypal account. Click on "more options", and choose UTF-8 from the drop-down menus. Save and redo the payment test. It should be satisfactory. You should always back up your files before performing an update. You may not need the update, but a file was downloaded by mistake during the installation of your online store. Then on the root server go to the module directory and rename it to _bkppaypal. You can now transfer the module you just downloaded.
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Prestashop bug occurs when the customer clicks on the Paypal CG checkbox without any information.

How to avoid easy shopping cart abandonment? Almost all PrestaShop online stores accept PayPal as a payment method. To avoid shopping cart abandonment, I recommend you to check the following. After adding his products to the basket, he connects to his account, chooses his delivery method, and finally ticks the box to accept the general conditions of sale. He is then redirected to a PayPal payment confirmation page. Since the redirection is automated and the customer has not chosen their payment method, they do not understand what is happening. It's simple: keep it simple and effective! In short: inform your customers! It doesn't really matter how complex your purchase process is, nor whether it includes automatic redirects. As long as you provide the information to your customer, it doesn't matter. Your customer should find it easy and straightforward to complete the purchase process. The problem is in the "/modules/paypal/views/js/paypal.js" file between lines 158 and 177. To make it simple, I invite you to create an override to correct the problem in this file.
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PayPal problem is no longer available on my Prestashop 1.7: case encountered.

Either the Prestashop PayPal module has been updated or the CDN cache has been cleared. The PayPal module has been disabled. It is stated: "As we continue to work on the security of your information, a revised version of the authentication for your merchant account can be found from v5.2.0 of our official PayPal module. It is necessary to connect your PayPal merchant account to continue using the PayPal payment system.I logged into my PayPal account through the prestashop PayPal module.It was validated but it has not changed.My php info says I have TLS1. 2. However, I also have cURL V7. My SSL certificate is up to date and httpS is enabled on all pages of my site. How can I make PayPal accessible again to my customers? It's urgent, I need it. Admit. PayPlug is an excellent French company that offers a very powerful payment interface for customers. The PayPal Checkout solution has a problem. It allows a variety of payment methods, and the payment method selection process in the tunnel purchase resembles that of a gasworks. It does not reflect my brand image. Regarding the paypal module that works with ovh, I have no explanation. Yet 95% of prestashop stores use PayPal.
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Prestashop 1.7 and rounding errors on Paypal.

If Prestashop 1.7 makes rounding errors with Paypal (invoices of 19.90 euros are collected at Paypal at 19 euros for example), the amounts collected by the Paypal v5.1.2 module will be rounded to the nearest euro. Verify that your site has the PS_PRICE_DISPLAY_PRECISION configuration variable in the ps_configuration table. Inserting a value of 2 for PS_PRICE_DISPLAY_PRECISION will fix this rounding bug, which also triggers payment error messages.
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Prestashop problem with Paypal sandbox and htaccess.

Many site managers create a pre-production platform and protect it with a "basic authentication" file. (.htaccess). Paypal will ask your site to confirm that the order has been paid. But Paypal does not know your password! Your order is still in the status "Awaiting Paypal payment", because Paypal has not confirmed the payment. The solution is to unlock the "basic authentication", which is in the Prestashop Paypal module directory. Likewise, Prestashop cannot access the "validation.php" URL, otherwise Prestashop will not receive payment confirmation and your order will not be validated. In sandbox mode, Paypal sends a payment to "payment error" with the order value at 0. Prestashop says it's normal because it's a sandbox mode. It's up to the developer to figure out what they're doing and that the payment should clear as normal. As the purchase process is not "normal", I do not use Paypal's Sandbox mode to test it.
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Prestashop and Paypal api error: case encountered.

Here is the error message I get from customers when they try to use the Paypal module. PayPalAPI module error report. A customer encountered a problem with the PayPalAPI module. "L_ERRORCODE0 -> 10002", "L_SHORTMESSAGE0 -> Authentication/Authorization Failed", "L_LONGMESSAGE0" -> You do not have permissions for this API call. This is a business account. Everything was working fine until Monday when I couldn't access the module in the back office of my prestashop. The page was not correctly redirected. This problem could be caused by disabling or refusing cookies. Customers could still use paypal at that time. We then disabled and re-enabled it. Clients still get the same error but cannot access it. I am trying to install the PayPal module. It connects without problem and I accept access to prestashop. The page then appears, but it does not respond to my request for a secure connection. It is still impossible to pay via paypal when I return to my site on another page. I am launching a website under prestashop. After doing the first payment test, I get this message: "403 Forbidden You don't have permission to access /shop/module/paypal/error on this server"
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Prestashop and Paypal bug "error occured": case encountered.

Customers cannot pay today with paypal. An error has occurred: I reset the module and put the information back. But nothing happens. I'm at ovh. I also contacted them. Google showed me that this problem is recurring and that it could be due to the host. But I didn't understand everything. How did you manage to get it to work again when you've had this problem before? I get exactly the same message as you when I request payment by paypal. I'm also at OVH shared prestashop 1.6, but when I go to my paypal account, I don't see the blue screen with the action required before June 30,
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Prestashop 1.7 Paypal, table 'ps_paypal_order' does not exist.

A problem with the Paypal module of Prestashop 1.7 was discovered not long ago. An error in the database prevented me from configuring the module. I did some research to find the solution. First, you need to check if the "ps_paypal_order" table is present. In my case, I was able to login to PhpMyAdmin and found all the tables that were linked to Paypal. However, my research revealed that it didn't even install the tables in my database for some people. You can delete the error and the data if you have it. We will reinstall the Paypal module by making changes to a file in this article. I strongly recommend that you make backups of your data before making any changes in the database. The error may occur depending on the version of MySQL. The module installation file contains a line that prevents the module from being linked to your database. This file is Dbtable.php. This file is loaded after installing the module on Prestashop. It will be necessary to modify a line. The file is located in the "paypal > vendor > ppbtlib > src > Db" folder. Then go to line 97 to find "COLLATE=$this->collation". You will then need to reinstall the module. This will allow the Paypal module to create tables and link to your Prestashop site.
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