Bibliography not printed using biblatex and natbib

Question

I have problems with making a reference list in Overleaf. I have created a .bib file with my references, but it won't print at all or it just the bib-file name.

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage[table,xcdraw]{xcolor}
\usepackage[english]{babel}
\usepackage{geometry}
\usepackage{siunitx}
\usepackage{biblatex}
\addbibresource{referencer.bib}

\usepackage[nottoc]{tocbibind}
\usepackage[utf8]{inputenc}
\usepackage{float}
\usepackage{caption}
\usepackage{array}
\setlength\extrarowheight{2pt}
\usepackage[table,dvipsnames]{xcolor}
\usepackage{natbib}     
\usepackage{csquotes}

\usepackage{subcaption}
\usepackage{cite}

\addbibresource{references.bib}

\setlength{\parindent}{0pt}
 \geometry{
 a4paper,
 total={160mm,247mm},
 left=25mm,
 top=25mm,
 }

\begin{document}

\input{Forside.tex}

\tableofcontents
\clearpage

\input{Chapter1}
\input{Chapter2}
\input{Chapter3}
\input{Chapter4}

\clearpage

\printbibliography

\end{document}

Answer 1

You can't load \usepackage{cite}, \usepackage{natbib} and \usepackage{biblatex} together. You should only ever load one of the three.

biblatex uses a completely different approach to producing citations and the bibliography than standard LaTeX/BibTeX. The packages cite and natbib were written to enhance the standard LaTeX/BIbTeX approach to citations and bibliographies, so they don't work together with biblatex. Since cite and natbib both do similar things, they shouldn't be used together to avoid definition clashes (for the most part natbib implements a superset of cite's features). Some more background can be found in bibtex vs. biber and biblatex vs. natbib, What to do to switch to biblatex? and biblatex in a nutshell (for beginners).

Judging by the other code in your preamble and document body, you are using biblatex, so you should remove \usepackage{cite} and \usepackage{natbib}.