我只是尝试编写一个非常简单的 .Rmd 文档，并将输出设置为 isoslides；但我收到 pandoc 错误（错误 5）。
---
title: "Test"
date: "April 3, 2018"
output: ioslides_presentation
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = FALSE)
```
## Slide with R Output
```{r cars, echo = TRUE}
summary(cars)
```
当我选择“针织”时，我得到一个弹出框：
还有一些错误信息：
output file: delete.knit.md
"C:/Users/myusername/AppData/Local/Pandoc/pandoc" +RTS -K512m -RTS delete.utf8.md --to html4 --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash --output delete.html --email-obfuscation none --self-contained --variable transition=0.4 --template "C:\Users\myusername\Documents\R\win-library\3.4\rmarkdown\rmd\ioslides\default.html" --include-in-header "C:\Users\myusername\AppData\Local\Temp\RtmpmEmO8h\rmarkdown-str17e07fd6873.html" --mathjax --variable "mathjax-url:https://mathjax.rstudio.com/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"
"C:/Users/myusername/AppData/Local/Pandoc/pandoc" +RTS -K512m -RTS delete.utf8.md --to ioslides_presentation.lua --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash --output "C:\Users\newtoner\AppData\Local\Temp\RtmpmEmO8h\ioslides-output17e0613812ce.html" --slide-level 2
Error: pandoc document conversion failed with error 5
In addition: Warning message:
running command '"C:/Users/myusername/AppData/Local/Pandoc/pandoc" +RTS -K512m -RTS delete.utf8.md --to ioslides_presentation.lua --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash --output "C:\Users\myusername\AppData\Local\Temp\RtmpmEmO8h\ioslides-output17e0613812ce.html" --slide-level 2' had status 5
Execution halted
我已经尝试使用 devtools 重新安装 rmarkdown 包，重新启动我的计算机，并在谷歌上搜索它......还没有运气。如果我能提供帮助，我宁愿不重新安装 RStudio。
我的会话信息：
sessionInfo()
R version 3.4.1 (2017-06-30)
Platform: i386-w64-mingw32/i386 (32-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1
Matrix products: default
locale:
[1] LC_COLLATE=English_Canada.1252 LC_CTYPE=English_Canada.1252 LC_MONETARY=English_Canada.1252 LC_NUMERIC=C
[5] LC_TIME=English_Canada.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
[1] Rcpp_0.12.15 digest_0.6.15 withr_2.1.1.9000 rprojroot_1.3-2 R6_2.2.2 backports_1.1.2 magrittr_1.5 git2r_0.12.1
[9] evaluate_0.10.1 httr_1.3.1 stringi_1.1.6 curl_3.1 rmarkdown_1.9.8 devtools_1.13.2 tools_3.4.1 stringr_1.3.0
[17] yaml_2.1.18 compiler_3.4.1 memoise_1.0.0 htmltools_0.3.6 knitr_1.20