If you are still having trouble with your document, let me know:

Or manually place .otf files in ~/.local/share/fonts/ and run fc-cache -fv .

Often represents an italic or specific weight of the primary font CIDFont+F4 Often a secondary font used for headers or special symbols How to Fix Missing CID Font Errors

If re-printing doesn't work, convert the PDF to a format that allows text manipulation.

If you cannot download font packs right away, you can sometimes bypass the error by changing how your software processes text: