---
title: "lolo"
author: "lola"
date: "4/14/2020"
output: html_document
---
```{r, first-chunk, out.width='50%', fig.align='center', fig.cap='...'}
knitr::include_graphics('/home/murphy/Downloads/beer.png')
```
```{r, second-chunk, out.width='50%', fig.align='center', fig.cap='...'}
knitr::include_graphics('/home/murphy/Downloads/Rplot.pdf')
```
Первый блок работает, второй - нет. Почему?