title: Can't read shp file in R
body: <p>I tried to open an shp file on my Mac, using this code:</p>
  
  <pre><code>library(tidyverse)
  library(sf)
  library(rgeos)
  sf_trees_raw &lt;- readr::read_csv('https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2020/2020-01-28/sf_trees.csv')
  temp_shapefile &lt;- tempfile()
  download.file("https://www2.census.gov/geo/tiger/TIGER2017//ROADS/tl_2017_06075_roads.zip", temp_shapefile)
  sf_roads &lt;- unzip(temp_shapefile, "tl_2017_06075_roads.shp") %&gt;%
    read_sf()
  </code></pre>
  
  <p>But I receive this error message:</p>
  
  <pre><code>Error: Cannot open "/Users/name/Documents/Playground/Trees_SF/tl_2017_06075_roads.shp"; The source could be corrupt or not supported. See `st_drivers()` for a list of supported formats.
  </code></pre>
  
  <p>I tried other shp files, and I receive the same error message:</p>
  
  <pre><code>map &lt;- read_sf("per_admbnda_adm1_2018.shp")
  Error: Cannot open "/Users/name/Documents/Playground/Trees_SF/per_admbnda_adm1_2018.shp"; The source could be corrupt or not supported. See `st_drivers()` for a list of supported formats.
  </code></pre>
  
  <p>I tried copying the shx and dbf files but it doesn't fix the problem.</p>
  
  <p>Any help will be greatly appreciated.</p>