# White vertical line on the Metropolis theme background [duplicate]

I am using Beamer's Metropolis theme which is freely obtained in Overleaf. The problem is that if I add the line

\addtobeamertemplate{background canvas}{\transfade[duration=1]}{}


to obtain effects in the presentation, in the PDF document there is a white line on the left side as you can see in this image

How I can avoid this?

I have used the following code, suggested by @samcarter

\documentclass{beamer}
\usetheme[background=dark]{metropolis}

• @GalCubo What is the purpose of having \transfade[duration=1] in the background canvas? – user36296 Feb 7 '18 at 20:54
• @GalCubo Can you add a MWE that reproduces the problem? \documentclass{beamer} \usetheme[background=dark]{metropolis} \addtobeamertemplate{background canvas}{\transfade[duration=1]}{} \begin{document} \begin{frame} abc \end{frame} \end{document} works fine for me. – user36296 Feb 7 '18 at 21:06