Migration from csv problem (Incorrect string value: '\xAB Nove...') In my drupal 8 project, I'm trying to import data of a content type from a csv file, everything is well, but when I'm trying to execute the migration command drush mim my_migration I got the following error: 

PDOException: SQLSTATE[HY000]: General error: 1366 Incorrect string value: '\xAB Nove...' for column 'sourceid1' at row 1 in                   [error]
/Users/brahim/Sites/news8/core/lib/Drupal/Core/Database/Statement.php:59


It seems like a problem of database encoding.. but I don't know what is it really, any idea about the solution?
maybe related to the source file encoding format (try with UTF-8). Check also for string issues (special characters) on the source file.