Undefined property

Dear Bro,

please can any one help me in solve this issue in View_Calc module always this message coming

"Notice: Undefined property: stdClass::$field_data_field_course_name_node_entity_type in views_calc_table_total() (line 307 of /sites/all/modules/views_calc/theme.inc)."

I already try all patches available related to this module

Note : please check the attached Pic for screenshot of error

Thanks a lot