accented character display error in chord mode

[Pascal LEGRIS]

% French é character for ré is not displayed in chord name and the following 
warning is displayed:
% (process:55672): Pango-WARNING **: 18:36:49.582: 
% Invalid UTF-8 string passed to pango_layout_set_text()
% Avertissement : aucun glyphe ne correspond au caractère U+FFFD 
% dans la fonte « 
/opt/local/share/fonts/urw-core35-fonts/NimbusSans-Regular.otf »

\version "2.22.2" % installed with Macport but other configurations have same 
problems
\language "français"

chord = \chordmode {
%       \frenchChords
    ré re %display R R instead of Ré Ré
}

\score {
        \new ChordNames {  \chord }
}