(labelyearlabelmonthlabelday) in biblatex-apa bibliography
The file contains both
\usepackage[american]{babel}
and
\DeclareLanguageMapping{british}{british-apa}
One has to use one of the two options above, not both.
The file contains both
\usepackage[american]{babel}
and
\DeclareLanguageMapping{british}{british-apa}
One has to use one of the two options above, not both.