Here is everything you need to know about why this happens and how to fix it for free. What are CIDFont F1, F2, F3, and F4?
/CIDFont /F1 findfont
Since you can't "install" a font called CIDFont F1, you have to help your computer recognize what it’s supposed to be. 1. The "Print to PDF" Trick (Windows/Mac) cidfont f1 f2 f3 f4 gratis
Search for on the official Adobe site. Install the pack corresponding to your OS. Here is everything you need to know about