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How to Fix Undefined Parser:parseFile method After Upgrading To

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Written by  Sarah
Monday, 06 August 2018 16:24
How to Fix Undefined Parser:parseFile method After Upgrading To - 5.0 out of 5 based on 2 votes

PrestaShop 1.7.4 released with the new features and improvement. As a PrestaShop theme developer, we have been trying to testing the latest version. But after upgrading from 1.7.3 to when accessing the PrestaShop administration we are getting the following error:

Got error PHP message: PHP Fatal error: Uncaught Error: Call to undefined method Symfony\\Component\\Yaml\\Parser::parseFile() in /vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php:667

Prestashop 1742 Issue

Luckily, the solution to fix this is quite easy. But please note that this is PrestaShop know issue and below fix is just a temporary fix, you should not directly change PrestaShop core file (override or create a plugin).

You can apply "How to fix Undefined Parser:parseFile method After Upgrade To" to fix it now and remove it after PrestaShop developers fix the core issue.

To fix this upgrading issue, please go to the modules/ps_facetedsearch folder >> Find Vendor folder >> Remove it or change its name.

Thanks for reading!

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