我正在计算机上运行示例闪亮应用程序，但出现此错误
Error: package or namespace load failed for ‘tidyverse’ in library.dynam(lib, package, package.lib):
DLL ‘stringi’ not found: maybe not installed for this architecture?
我使用的唯一软件包是shiny。下面是R studio版本。
```
platform x86_64-w64-mingw32
arch x86_64
os mingw32
system x86_64, mingw32
status
major 3
minor 5.1
year 2018
month 07
day 02
svn rev 74947
language R
version.string R version 3.5.1 (2018-07-02)
nickname Feather Spray
sessionInfo()
R version 3.5.1 (2018-07-02)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1
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] zoo_1.8-3 tidyr_0.8.1 plotly_4.8.0 ggplot2_3.0.0
[5] knitr_1.20 dplyr_0.7.6 plyr_1.8.4 shinydashboard_0.7.0
[9] shinyWidgets_0.4.3 shiny_1.1.0
loaded via a namespace (and not attached):
[1] tidyselect_0.2.4 purrr_0.2.5 haven_1.1.2 lattice_0.20-35 colorspace_1.3-2
[6] htmltools_0.3.6 viridisLite_0.3.0 yaml_2.2.0 rlang_0.2.2 later_0.7.4
[11] pillar_1.3.0 glue_1.3.0 withr_2.1.2 bindrcpp_0.2.2 bindr_0.1.1
[16] munsell_0.5.0 gtable_0.2.0 htmlwidgets_1.2 forcats_0.3.0 httpuv_1.4.5
[21] broom_0.5.0 Rcpp_0.12.18 xtable_1.8-3 promises_1.0.1 scales_1.0.0
[26] backports_1.1.2 jsonlite_1.5 mime_0.5 hms_0.4.2 digest_0.6.16
[31] grid_3.5.1 tools_3.5.1 magrittr_1.5 lazyeval_0.2.1 tibble_1.4.2
[36] crayon_1.3.4 pkgconfig_2.0.2 rsconnect_0.8.8 data.table_1.11.4 assertthat_0.2.0
[41] httr_1.3.1 rstudioapi_0.7 R6_2.2.2 nlme_3.1-137 compiler_3.5.1
```