header.tex

\documentclass[pdftex, a4paper]{scrartcl}
\usepackage{ngerman}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{array}
\usepackage{subfiles}
\usepackage{url}
%\usepackage{hyperref}
\usepackage[hidelinks]{hyperref}
\usepackage{parskip}
\setlength{\parskip}{1em}
\usepackage{xurl}
\usepackage[nottoc,notlot,notlof]{tocbibind}
\usepackage {graphicx}
\usepackage{xcolor}
\usepackage{setspace}
\linespread{1.5}
\usepackage{geometry}
\geometry{
    a4paper,
    right=50mm,
    bottom=50mm,
}
\usepackage{float}
\usepackage{etoolbox}
\AtBeginEnvironment{thebibliography}{\linespread{1}\selectfont}
\usepackage{endnotes}
\interfootnotelinepenalty=10000
\usepackage{pdflscape}
\usepackage{fancyhdr} 
\usepackage[nonumberlist,acronym,toc]{glossaries} 
\usepackage{pdflscape}
\usepackage{lipsum}
\usepackage[titletoc]{appendix}
\usepackage{pdfpages}