Cidfont — F1 Normal Fixed

are arbitrary tags assigned by the PDF generator (e.g., Adobe Acrobat, XeLaTeX, or web-based export tools) when the original font cannot be fully embedded or named properly. : Often uses Identity-H (horizontal) or Identity-V

If you are seeing this error message or text is appearing as dots or garbled characters in your essay, try these solutions found on Superuser and other forums: cidfont f1 normal fixed