I know it's all greek to you.But don't mind the language.I wanna know why there is this space between the text of the chapter? In other chapters there is no such a problem.
\documentclass[a4paper,12pt,twoside]{report}
\usepackage{xltxtra}
\usepackage[left=3cm,right=2.5cm,top=2.5cm,bottom=2.5cm]{geometry}
\usepackage[LGR]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[english,greek]{babel}
\newcommand{\en}{\selectlanguage{english}}
\newcommand{\gr}{\selectlanguage{greek}}
\usepackage{amsmath,amsfonts,amssymb}
\usepackage[parfill]{parskip}
\usepackage[unicode]{hyperref}
\usepackage{bookmark}
\usepackage{cite}
\usepackage{graphicx}
\graphicspath{{../PICS/}}
\usepackage{subcaption}
\usepackage{float}
\usepackage{siunitx}
\usepackage{color}
\usepackage{kmath,kerkis}
\usepackage{fancyhdr}
\usepackage{comment}
\usepackage{nopageno}
\usepackage[figurename=εικόνα]{caption}
\setmainfont{Times New Roman}
\pagestyle{fancy}
\fancyhf{}
\fancyfoot[R]{\thepage}
% Redefine plain style, which is used for titlepage and chapter beginnings
% From https://tex.stackexchange.com/a/30230/828
\fancypagestyle{plain}{%
\renewcommand{\headrulewidth}{0pt}%
\fancyhf{}%
\fancyfoot[R]{\thepage}%
}
\renewcommand{\headrulewidth}{0.4pt}
\renewcommand{\baselinestretch}{1.5}
\setlength{\headheight}{15pt}
\rhead{\thechapter }
\lhead{ \chaptername}
\rfoot{\thepage}
%\graphicspath{{../PICS/}}
\def\tl{\textlatin}
\def\tg{\textgreek}
\begin{document}
\thispagestyle{empty}
\begin{sloppypar} % δεν εχουμε προβλημα με το overfull hbox
\include{cover}
\title{Μελέτη, ανάπτυξη και ενσωμάτωση ψηφιακού φωνητικού βοηθού στο έξυπνο σπίτι με χρήση opensource τεχνολογιών}
\author{ΧΑΤΖΟΓΛΟΥ ΚΩΝΣΤΑΝΤΙΝΟΣ \\
\date{Μάρτιος 2022}}
%\today\\
%\href{mailto:[email protected]}{\tl{[email protected]}}}
\maketitle
\renewcommand*\listfigurename{Κατάλογος Εικόνων}%αλλαγη του table of figures(καταλογος σχηματων)
{\pagestyle{plain}
\tableofcontents
\listoffigures
\cleardoublepage}
\renewcommand{\listfigurename}{Κατάλογος Εικόνων}
\part {Ανάλυση}
\include{Introduction}
\thispagestyle{empty}
\include{chapter1}
\include{chapter2}
\include{chapter3}
\part{Υλοποίηση}
\include{DOCUMENT/hardware}
\include {DOCUMENT/Install}
\include{DOCUMENT/software}
\part{Συμπεράσμα και Μελλοντικές Επεκτάσεις}
\include{DOCUMENT/expansions}
\appendix
\include{acronyms}
\selectlanguage{greek}
\bibliographystyle{IEEEtran}
\bibliography{IEEEabrv,references}
\end{sloppypar}
\end{document}
[H]. The figure doesn't fit, and goes to the next page. This looks like a book class, and books typically have flush bottoms. So the text of that section is shoved down to the bottom, leaving a space above it. Try changing[H]to[ht]and see if that helps.[H]which is an explicit request to get bad space, or rather to stop latex avoiding bad space, so you need to adjust the text by hand. latex floats figures to stop getting bad space forced by page breaks, so naturally if you use[H]which just disables the floating mechanism, then you get bad spaces unless you position the figures "by hand", to enable page breaking in better places.