Warum dupliziert pgfplots meine erste symbolic coordinate?

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\documentclass[tikz]{standalone}
\usepackage{mathpazo}
\usepackage{pgfplots}
\pgfplotsset{
    compat=1.18,
}
\begin{document}
\begin{tikzpicture}
    \begin{axis}[
        ybar,
        ymin=0,
        ymax=45,
        % enlarge x limits=false,
        height=5cm,
        width=13cm,
        scale only axis,
        symbolic  x coords={
            MFC,
            MFC*,
            MIO,
            MOC,
            MIC,
            MVD,
            MPL,
            MPL*,
            VSI,
            ME,
            MCC,
            TLL,
            others,
        },
        nodes near coords,
        nodes near coords align={vertical},
        ylabel={Number of articles},
        x tick label style={
            rotate=90,
            anchor=east,
        },
 
 
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