Click on source destination getting below error.

[maulikpatel-drupal]

InvalidArgumentException: You must declare "ids" as a unique array of fields in your source settings. in Drupal\migrate_source_csv\Plugin\migrate\source\CSV->__construct() (line 105 of D:\xampp\htdocs\bayer\modules\contrib\migrate_source_csv\src\Plugin\migrate\source\CSV.php).