Unable to display the file .../images/securimage/AHGBold.ttf: Unsupported file format

Hi All,
How can I solve the problem menstioned as an error message in my server while trying to open the file for edit?
Please help and thanks in advance.

Unable to display the file /var/www/vhosts/mydomain/httpdocs/components/com_contentbuilder/images/securimage/AHGBold.ttf: Unsupported file format.