Wrapfig package

I have a problem with my code, this it is

documentclass[11pt]{article}
usepackage{wrapfig,lipsum, graphicx, float}

setlength{columnsep}{30pt}
begin{wrapfigure}[4]{l}{0.2textwidth}
      begin{center} 
             includegraphics[width=0.25textwidth]{hyper.png}
             vspace{-3mm}
      end{center}
end{wrapfigure}
begin{multicols}{2}
...
end{multicols}...
end{document}

I have the following warning:

Package wrapfig
Warning: wrapfigure used inside a conflicting enviroment on imput line

I think the columns may be generating the problem however I am not sure