title: Why is my Shiny app not working? ' there is no package called 'tidyverse' '
body: <p>So, I wonder if anyone has a clue about this.</p>
  <p>I have an app which works on my computer, but when I try to deploy it using shinyapps.io, I get nothing but an error message.</p>
  <p>This is the error message I get:</p>
  <pre><code>Error in value[[3L]](cond) : there is no package called ‘tidyverse’
  Calls: local ... tryCatch -&gt; tryCatchList -&gt; tryCatchOne -&gt; &lt;Anonymous&gt;
  Halted execution.
  </code></pre>
  <p>My session info is:</p>
  <pre><code>R version 3.6.1 (2019-07-05)
  Platform: x86_64-w64-mingw32/x64 (64-bit)
  Running under: Windows 10 x64 (build 18362)
  
  Matrix products: default
  
  locale:
  [1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United States.1252   
  [3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C                          
  [5] LC_TIME=English_United States.1252    
  
  attached base packages:
  [1] stats     graphics  grDevices utils     datasets  methods   base     
  
  other attached packages:
   [1] shinydashboard_0.7.1 sf_0.8-0             plotly_4.9.1         shinythemes_1.1.2   
   [5] vctrs_0.2.0          ggcorrplot_0.1.3     DT_0.10              forcats_0.4.0       
   [9] stringr_1.4.0        dplyr_0.8.3          purrr_0.3.3          readr_1.3.1         
  [13] tidyr_1.0.0          tibble_2.1.3         ggplot2_3.2.1        tidyverse_1.3.0     
  [17] shiny_1.4.0          rsconnect_0.8.16    
  
  loaded via a namespace (and not attached):
   [1] Rcpp_1.0.3         lubridate_1.7.4    lattice_0.20-38    class_7.3-15       assertthat_0.2.1  
   [6] zeallot_0.1.0      digest_0.6.23      packrat_0.5.0      mime_0.7           R6_2.4.1          
  [11] cellranger_1.1.0   backports_1.1.5    reprex_0.3.0       e1071_1.7-3        httr_1.4.1        
  [16] pillar_1.4.2       rlang_0.4.2        lazyeval_0.2.2     curl_4.2           readxl_1.3.1      
  [21] data.table_1.12.8  rstudioapi_0.10    htmlwidgets_1.5.1  munsell_0.5.0      broom_0.5.2       
  [26] compiler_3.6.1     httpuv_1.5.2       modelr_0.1.5       pkgconfig_2.0.3    askpass_1.1       
  [31] htmltools_0.4.0    openssl_1.4.1      tidyselect_0.2.5   viridisLite_0.3.0  crayon_1.3.4      
  [36] dbplyr_1.4.2       withr_2.1.2        later_1.0.0        grid_3.6.1         nlme_3.1-140      
  [41] jsonlite_1.6       xtable_1.8-4       gtable_0.3.0       lifecycle_0.1.0    DBI_1.0.0         
  [46] magrittr_1.5       units_0.6-5        scales_1.1.0       KernSmooth_2.23-15 cli_1.1.0         
  [51] stringi_1.4.3      fs_1.3.1           promises_1.1.0     xml2_1.2.2         generics_0.0.2    
  [56] tools_3.6.1        glue_1.3.1         hms_0.5.2          fastmap_1.0.1      colorspace_1.4-1  
  [61] classInt_0.4-2     rvest_0.3.5        haven_2.2.0   
  </code></pre>