Minipage in Latex failing to compile - latex

Question

I want to put a table and figure above/below one another in my article tex file as they are related. Until now it has worked in this document but suddenly it isn't working and I can't compile in Overleaf. Please help.
\begin{document}
\begin{minipage}[b]{1\textwidth}
\centering
\captionof{table}{Best Case Scenario A IC values when synthesis, desiccation (and algae collection) have been excluded from the system.}
\label{tab:BestA_synthANDdesiccation_excluded}
\begin{tabular}{#{}llcc#{}}
\toprule
IC & Unit & Total (no collection) & Total (with collection) \\ \midrule
CC & kg CO2 eq & -1.1E+03 & -7.0E+02 \\
Ecotox & CTUe & 2.1E+02 & 1.4E+04 \\
HTnc & CTUh & 6.9E-08 & 1.4E-05 \\
PM & disease inc. & 3.7E-07 & 1.0E-05 \\
RUf & MJ & 9.3E+01 & 5.6E+03 \\
RUm & kg Sb eq & 8.0E-06 & 3.6E-02 \\ \bottomrule
\end{tabular}
\end{minipage}
\begin{minipage}
\includegraphics[width=1\textwidth]{Pictures/A_best_nosynANDnodesiccationANDnocollection.png}
\captionof{figure}{Characterisation of the sub-systems in best-case scenario A when synthesis, desiccation and algae collection have been excluded from the system boundaries. Method: EF 3.0 Method (adapted) V1.00}
\label{fig:Abest_nosyn_nodesiccation}
\end{minipage}
\end{document}

Answer 1

The main problem is that the minipage has an mandatory argument to specify the width, so you'll need
\begin{minipage}{\linewidth}
Some other comments:
best not specify a file type for your image \includegraphics[width=1\textwidth]{Pictures/A_best_nosynANDnodesiccationANDnocollection}. If you have the same image in different formats latex will then include the one best suited for the engine you use to compile your document
Unless your minipage is in a float environment like figure or table you want to add \noindent before the minipage. Without this there is not enough space in your line to fit a minipage with \textwidth
if you want to have the numbers in your table nicely aligned, have a look at the siunitx package
\documentclass{article}
\usepackage{caption}
\usepackage{booktabs}
\usepackage{graphicx}
\begin{document}
\noindent%
\begin{minipage}[b]{1\textwidth}
\centering
\captionof{table}{Best Case Scenario A IC values when synthesis, desiccation (and algae collection) have been excluded from the system.}
\label{tab:BestA_synthANDdesiccation_excluded}
\begin{tabular}{#{}llcc#{}}
\toprule
IC & Unit & Total (no collection) & Total (with collection) \\ \midrule
CC & kg CO2 eq & -1.1E+03 & -7.0E+02 \\
Ecotox & CTUe & 2.1E+02 & 1.4E+04 \\
HTnc & CTUh & 6.9E-08 & 1.4E-05 \\
PM & disease inc. & 3.7E-07 & 1.0E-05 \\
RUf & MJ & 9.3E+01 & 5.6E+03 \\
RUm & kg Sb eq & 8.0E-06 & 3.6E-02 \\ \bottomrule
\end{tabular}
\end{minipage}
\begin{minipage}{\linewidth}
\includegraphics[width=1\textwidth]{example-image-duck}
\captionof{figure}{Characterisation of the sub-systems in best-case scenario A when synthesis, desiccation and algae collection have been excluded from the system boundaries. Method: EF 3.0 Method (adapted) V1.00}
\label{fig:Abest_nosyn_nodesiccation}
\end{minipage}
\end{document}