Download PDF from API - Font Missing?

Good Day

When Viewing/Printing documents from ERPNext it shows correctly, but when saving PDF from API call then it give me following message and printing looks different.

downloadable font: OS/2: Adjusting head.macStyle (regular) to match fsSelection (font-family: “g_d0_f2” style:normal weight:400 stretch:100 src index:0) source: (invalid URI)

Any suggestion of how this can be fixed?

Thank You

Albertus Geyser