Relecture complète du code et correction de ce dernier.

.htaccess

.idea/codeStyles/Project.xml

.idea/codeStyles/codeStyleConfig.xml

.idea/dataSources.xml

.idea/deployment.xml

.idea/discord.xml

.idea/inspectionProfiles/Project_Default.xml

.idea/sqldialects.xml

.idea/sshConfigs.xml

.idea/webServers.xml

configuration.php

core/classes/Admin.php

core/classes/BddConn.php

core/classes/Client.php

core/classes/Connexion.php

core/classes/Item.php

core/classes/Seller.php

core/classes/Shop.php

core/conf/ConfigurationGenerale.php

core/controller/adminBackTasks.php