Biblatex missing characters in Libertinus

[Wolfgang Engelmann]

Am 01.12.21 um 16:22 schrieb Herbert Voss:
> 
> 
> Am 01.12.21 um 09:22 schrieb Wolfgang Engelmann:
>> Running a biblatex document for the pdf output I get errors for 
>> missing characters.
>> What is the best way to remove these errors?
>> Wolfgang
>>
>>
>> Missing character: There is no ▴ (U+25B4) in font 
>> [LibertinusMath-Regular.otf]
>> Missing character: There is no œ (U+009C) in font 
>> [LibertinusSerif-Regular.otf]
>>
>> Missing character: There is no 𝜇 (U+1D707) in font 
>> [LibertinusSerif-Regular.o
>> Missing character: There is no 𝜑 (U+1D711) in font 
>> [LibertinusSerif-Regular.o
> 
> Wolfgang, three of the four characters are math symbols. You have
> to load a proper math font. Write into the preamble:
> 
> \usepackage{libertinus}
> \setmathfont{STIX2Math.otf}
> 
> 
I inserted your
\usepackage{libertinus}
\setmathfont{STIX2Math.otf}

(I had before
\usepackage{libertinus-otf}
\setmonofont[Scale=MatchLowercase,FakeStretch=0.88,Ligatures=ResetAll]{AnonymousPro} 

 >the second one in one line, i.e. [...]{AnonymousPro}

which gives an error message
! Package fontspec Error: The font "STIX2Math" cannot be found.

What was wrong?
Do you need more of the log-file? >
  A font might not be found for many reasons.
  Check the spelling, where the font is installed etc. etc.

  When in doubt, ask someone for help!


luaotfload | aux : no font with id 0

Package fontspec Warning: Font "STIX2Math" does not contain requested Script
(fontspec)                "Math".

luaotfload | aux : no font with id 0
luaotfload | aux : no font with id 0

! Package fontspec Error: The font "STIX2Math" cannot be found.