Salut Brandon, merci pour ta réponse ! j'ai bel et bien importer la bdd du cms donc oui les tables sont bien présentes et je suis bien en version php 5.6 c'est ma situation actuelle au problème.
dans les logs mysql j'obtiens ceci :
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'min_value' at position 3 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'max_value' at position 4 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'min_value' at position 3 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'max_value' at position 4 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'min_value' at position 3 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'max_value' at position 4 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'min_value' at position 3 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'max_value' at position 4 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'min_value' at position 3 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'max_value' at position 4 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'min_value' at position 3 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'max_value' at position 4 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'min_value' at position 3 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'max_value' at position 4 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'min_value' at position 3 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'max_value' at position 4 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'min_value' at position 3 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'max_value' at position 4 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'min_value' at position 3 to have type varbinary(255), found type varchar(255).
2018-12-17 22:06:20 21780 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'max_value' at position 4 to have type varbinary(255), found type varchar(255).