Error in readLines(process_get_error_connection(self, private), ...) : 'con' is not a connection

[bstabler]

I have the same problem as shinytest #113. phantomjs is in my path and runs from the command line:

C:\>phantomjs.exe --proxy-type=none --webdriver=127.0.0.1:8910  --webdriver-logle
vel="DEBUG"
[DEBUG - 2017-07-10T05:23:27.865Z] Config - config.init - {"ip":"127.0.0.1","port
":"8910","hub":null,"proxy":"org.openqa.grid.selenium.proxy.DefaultRemoteProxy",
"version":"","logFile":null,"logLevel":"DEBUG","logColor":false}
[INFO  - 2017-07-10T05:23:27.889Z] GhostDriver - Main - running on port 8910

but this doesn't work:

> library(webdriver)
> webdriver::run_phantomjs()
Error in readLines(process_get_error_connection(self, private), ...) : 
  'con' is not a connection
> traceback()
6: readLines(process_get_error_connection(self, private), ...)
5: process_read_error_lines(self, private, ...)
4: ph$read_error_lines()
3: strwrap(ph$read_error_lines())
2: stop("Cannot start phantom.js, or cannot connect to it", strwrap(ph$read_error_lines()))
1: webdriver::run_phantomjs()

and here is my session info:

> sessionInfo()
R version 3.3.2 (2016-10-31)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 8.1 x64 (build 9600)

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] webdriver_1.0.2.9000 shinytest_1.1.0     

loaded via a namespace (and not attached):
 [1] Rcpp_0.12.11     magrittr_1.5     debugme_1.0.2    xtable_1.8-2     showimage_1.0.0 
 [6] R6_2.2.2         rematch_1.0.1    httr_1.2.1       tools_3.3.2      parsedate_1.1.3 
[11] png_0.1-7        withr_1.0.2      htmltools_0.3.6  assertthat_0.2.0 digest_0.6.12   
[16] crayon_1.3.2     processx_2.0.1   shiny_1.0.3.9001 base64enc_0.1-3  testthat_1.0.2  
[21] curl_2.7         mime_0.5         pingr_1.1.2      jsonlite_1.5     httpuv_1.3.3    

any ideas? Thanks.

[wch]

Closing since this is a duplicate issue.