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!