Importing Issue - SugarFieldMultienum Page

HI, I’m trying to import 4000 accounts to my CRM and when i do that it imports 100 accounts and after that i get the following error

WARNING: [2] Declaration of SugarFieldMultienum::displayFromFunc($displayType, $parentFieldArray, $vardef, $displayParams, $tabindex) should be compatible with SugarFieldEnum::displayFromFunc($displayType, $parentFieldArray, $vardef, $displayParams, $tabindex = 0) on line 42 in file /include/SugarFields/Fields/Multienum/SugarFieldMultienum.php

Not sure why it’s happening. Please help me to fix this issue