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"Error during install/upgrade" l'hors du Mise à jour manuelle de version 1.2 à 1.4

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J'ai suivi le doc de mise à jour manuelle de prestashop http://doc.prestashop.com/pages/viewpage.action?pageId=11272350 par contre au niveau de "Compatibilité système" le temps de l'installation il m'affiche cet errer la:


Une ou plusieurs erreurs sont apparues, vous trouverez plus d'informations ci-dessous ou dans le fichier log/installation.log


Error during install/upgrade: ( ! ) Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in C:\wamp\www\pets_dating_PREP\classes\MySQL.php on line 33 Call Stack #TimeMemoryFunctionLocation 10.0010291064{main}( )..\model.php:0 20.0050775120ConfigurationCore::loadConfiguration( )..\model.php:77 30.0060855200DbCore::getInstance( )..\Configuration.php:323 40.0080959360DbCore->__construct( )..\Db.php:86 50.0080959392MySQLCore->connect( )..\Db.php:109 60.0080959440mysql_connect ( )..\MySQL.php:33 

You may have to:

  1. Fix the error(s) displayed
  2. Put your database backup
  3. Modify the file settings.inc.php to put the old version for the line with _PS_VERSION_
  4. Restart the upgrade process from the begining






Comment dois-je faire ????

Merci d'avance 




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