Bullet list inside a table cell - latex

Question

I want to create a table like what is shown in the figure, i.e. to have a bullet list of items in some of the table cells.
I tried to use simply the "itemize" environment within the "tabular" environment, like this:
\documentclass[12pt]{extarticle}
\begin{document}
\begin{table}
\centering
\begin{tabular}{| l | l | l | l |}
\hline
Verticals & Drivers & Enablers & 5G requirement \\
\hline
Education &
\begin{itemize}
\item Remote delivery
\item Immersive experiences
\end{itemize} &
\begin{itemize}
\item Video streaming
\item Augmented reality
\item Virtual reality
\end{itemize} &
\begin{itemize}
\item Large bandwidth
\item Low latency
\end{itemize} \\
\hline
\end{tabular}
\end{table}
\end{document}
But it doesn't work and pops up this error:
! LaTeX Error: Something's wrong--perhaps a missing \item.
Does anyone know the cause of the error? By search, I realized that this technique is correct and using items inside a table is possible. But I cannot figure out the problem in my code.

Answer 1

You need a column of fixed width, e.g. m{4cm} instead of l
\documentclass[12pt]{extarticle}
\usepackage{geometry}
\usepackage{array}
\begin{document}
\begin{table}
\centering
\setlength{\leftmargini}{0.4cm}
\begin{tabular}{| m{2cm} | m{4cm} | m{4cm} | m{4cm} |}
\hline
Verticals & Drivers & Enablers & 5G requirement \\
\hline
Education &
\begin{itemize}
\item Remote delivery
\item Immersive experiences
\end{itemize} &
\begin{itemize}
\item Video streaming
\item Augmented reality
\item Virtual reality
\end{itemize} &
\begin{itemize}
\item Large bandwidth
\item Low latency
\end{itemize} \\
\hline
\end{tabular}
\end{table}
\end{document}