Word casing affects NER tagging

Hi,
I want to tag NER for multiple columns in a csv file, mainly focusing on ‘LOC’ tags. Due to the nature/requirements of data, the columns will mostly be in lowercase. I tried to use dslim/bert-base-NER and it works fine as long as the location names have their first letter capital otherwise it does not tag the location. Is there any way around this ? Thank you.