Export/Import Tool Undefined filter_group_name

Hi all,

i used import/export tool from this site : http://www.opencart.com/index.php?route ... sion_id=17

i had problems when import data to my backend.

2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'ProductFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!
2016-06-14 4:59:30 - Export/Import: Undefined filter_group_name 'Price' used in worksheet 'CategoryFilters'!

tool version : opencart-2-x-export-import-multilingual-3-3.ocmod.zip
opencart version : 2.1.0.1

I get this error even when i import a new xls file that i just export without doing any changes on the file.
Does anyone has this problem also? or has solution for this?
All help will be appreciated.

Thank you