title: How to fix "failed to load cairo DLL" in R?
body: <p>I am running into this warning message that will stop execution.</p>
  
  <pre><code>Saving 8.04 x 5.67 in image
  Warning messages:
  1: In dev(file = filename, width = dim[1], height = dim[2], ...) :
    unable to load shared object '/usr/local/Cellar/r/3.5.0_1/lib/R/library/grDevices/libs//cairo.so':
  
    dlopen(/usr/local/Cellar/r/3.5.0_1/lib/R/library/grDevices/libs//cairo.so, 6): image not found
  2: In dev(file = filename, width = dim[1], height = dim[2], ...) :
    failed to load cairo DLL
  </code></pre>
  
  <hr>
  
  <p>This is the code that generates that warning for me</p>
  
  <pre><code>library(tidyverse)
  library(cowplot)
  
  d &lt;- sample_n(diamonds, 50)
  g &lt;- ggplot(d, aes(carat, price)) + geom_point()
  gg &lt;- list(g,g,g)
  
  plot_grid(plotlist = gg, nrow=1) %&gt;% 
    cowplot::ggsave(filename = paste0("~/Desktop/", paste0("testing", ".svg")), device = cairo_ps)
  </code></pre>
  
  <p>How do I go about fixing this error? </p>
  
  <p>P.s. I am a novice.</p>
  
  <p>EDIT:
  This is my session information. I am not sure if this would be helpful. I have included it just in case.</p>
  
  <p><code>sessionInfo()</code></p>
  
  <pre><code>R version 3.5.0 (2018-04-23)
  Platform: x86_64-apple-darwin17.6.0 (64-bit)
  Running under: macOS High Sierra 10.13.5
  
  Matrix products: default
  BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
  LAPACK: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib
  
  locale:
  [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
  
  attached base packages:
  [1] parallel  stats     graphics  grDevices utils     datasets  methods   base     
  
  other attached packages:
   [1] cowplot_0.9.2     forcats_0.3.0     stringr_1.3.1     dplyr_0.7.5      
   [5] purrr_0.2.5       readr_1.1.1       tidyr_0.8.1       tibble_1.4.2     
   [9] ggplot2_2.2.1     tidyverse_1.2.1   doParallel_1.0.11 iterators_1.0.9  
  [13] foreach_1.4.4     lmerTest_3.0-1    lme4_1.1-17       Matrix_1.2-14    
  
  loaded via a namespace (and not attached):
   [1] tidyselect_0.2.4  reshape2_1.4.3    splines_3.5.0     haven_1.1.1      
   [5] lattice_0.20-35   argparse_1.1.1    colorspace_1.3-2  getopt_1.20.2    
   [9] yaml_2.1.19       rlang_0.2.1       nloptr_1.0.4      pillar_1.2.3     
  [13] foreign_0.8-70    glue_1.2.0        readxl_1.1.0      modelr_0.1.2     
  [17] bindrcpp_0.2.2    bindr_0.1.1       plyr_1.8.4        cellranger_1.1.0 
  [21] munsell_0.4.3     findpython_1.0.3  gtable_0.2.0      rvest_0.3.2      
  [25] codetools_0.2-15  psych_1.8.4       labeling_0.3      broom_0.4.4      
  [29] proto_1.0.0       Rcpp_0.12.17      scales_0.5.0      jsonlite_1.5     
  [33] mnormt_1.5-5      hms_0.4.2         stringi_1.2.2     numDeriv_2016.8-1
  [37] grid_3.5.0        cli_1.0.0         tools_3.5.0       magrittr_1.5     
  [41] lazyeval_0.2.1    crayon_1.3.4      pkgconfig_2.0.1   MASS_7.3-49      
  [45] xml2_1.2.0        lubridate_1.7.4   rstudioapi_0.7    assertthat_0.2.0 
  [49] minqa_1.2.4       httr_1.3.1        R6_2.2.2          nlme_3.1-137     
  [53] compiler_3.5.0   
  </code></pre>