Environment onehalfspacing error messages on compiling

Question

In my document I've added the code onehalfspacing but everytime I compile I get the following error message:

Missing } inserted. }.

Please see below an MWE:

\documentclass[a4paper,12pt]{article}
\usepackage{color}
\usepackage{graphicx, epstopdf}
\usepackage{gensymb}
\usepackage{times}
\usepackage{adjustbox}
\usepackage{tabulary}
\usepackage{tabularx}
\usepackage{longtable}
\usepackage{booktabs,caption, makecell}
\usepackage{pdflscape,afterpage,caption}
\usepackage[british]{babel}
\usepackage[backend=bibtex, citestyle=ieee, bibstyle=ieee]{biblatex}
\usepackage[section]{placeins}%Allows you to permanently fix figures. 
\addbibresource{library}
\usepackage{titleps}%fancy page borders? 
\usepackage[left=2.8cm, right=2.8cm, top=3.5cm, bottom=3.5cm]{geometry}
\usepackage{caption}
\captionsetup[figure]{font=scriptsize,labelfont=scriptsize}
\captionsetup[table]{font=scriptsize,labelfont=scriptsize}
\usepackage{microtype}
\usepackage{setspace}

\begin{document}
\begin{onehalfspacing}
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    \end{onehalfspacing}
\end{document}

Grateful for any advice to fix this without making large scale changes to my document (it's a lage document and I'm paranoid there will be conflicting codes).

Thanks in advance!

Answer 1

The setspace package defines

1. \onehalfspacing, a declaration, and

2. onehalfspace, an environment.

It's wrong using the former as if it were the latter. So use

\begin{onehalfspace}
...
\end{onehalfspace}

If you want that the whole document is typeset in “one and a half spacing”, put

\onehalfspacing

before \begin{document}.