[Product Catalog Import] Invalid argument supplied for foreach()

Hi !
I recently updated the Product Catalog (CSV, Excel) Import to v5.4.0. and something is going wrong :/

The product stock doesn\'t change, no errors, but I found this :

 [23-Jul-2019 10:15:48 Europe/Paris] PHP Warning:  Invalid argument supplied for foreach() in /home/****/shoponline/modules/simpleimportproduct/import.php on line 698

on modules > simpleimportproduct > error.log 

Please, can I have some help ?
Thanks a lot.