can't add other languages as default on the resume languages

I can't add other languages as default on the resume languages

admin/structure/field-collections/field-resume-languages/fields/field_resume_languages_level?render=overlay

MESSAGE Notice: Undefined index: field_resume_languages_level in term_level_element_ajax_callback() (line 122 of /home/romaniun/jobs.romaniuniti.uk/profiles/recruiter/modules/term_level/term_level_element.inc).

while trying to edit the default languages available for FIELD COLLECTION FIELD_RESUME_LANGUAGES SETTINGS