accented characters error

Question

I'm writing with french language. Document and chapters title are okey but the main text like this:
Here the used packages:

\usepackage[explicit]{titlesec}
\usepackage[french]{babel}
\usepackage{titletoc}
\usepackage{tikz}
\usepackage{lipsum}
\usepackage{epigraph}
\usepackage{xpatch}
\usepackage{lmodern}
\usepackage{amssymb}
\usepackage{mathrsfs}
\usepackage{graphicx}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{biblatex} 

Thanks!

Answer 1

If you get a TeX error you should ask about the error (the typeset output after an error is usually meaningless)

With your preamble you will get the error

! LaTeX Error: Option clash for package inputenc.

because you load inputenc twice with incompatible options.

\usepackage[latin1]{inputenc}

\usepackage[utf8]{inputenc}

In fact in your case the second one is the one that you want, so delete the first of these lines.