* using log directory 'd:/Rcompile/CRANpkg/local/3.6/PantaRhei.Rcheck'
* using R version 3.6.3 (2020-02-29)
* using platform: x86_64-w64-mingw32 (64-bit)
* using session charset: ISO8859-1
* checking for file 'PantaRhei/DESCRIPTION' ... OK
* this is package 'PantaRhei' version '0.1.2'
* package encoding: UTF-8
* checking package namespace information ... OK
* checking package dependencies ... OK
* checking if this is a source package ... OK
* checking if there is a namespace ... OK
* checking for hidden files and directories ... OK
* checking for portable file names ... OK
* checking whether package 'PantaRhei' can be installed ... OK
* checking installed package size ... OK
* checking package directory ... OK
* checking 'build' directory ... OK
* checking DESCRIPTION meta-information ... OK
* checking top-level files ... OK
* checking for left-over files ... OK
* checking index information ... OK
* checking package subdirectories ... OK
* checking R files for non-ASCII characters ... OK
* checking R files for syntax errors ... OK
* checking whether the package can be loaded ... OK
* checking whether the package can be loaded with stated dependencies ... OK
* checking whether the package can be unloaded cleanly ... OK
* checking whether the namespace can be loaded with stated dependencies ... OK
* checking whether the namespace can be unloaded cleanly ... OK
* checking loading without being on the library search path ... OK
* checking use of S3 registration ... OK
* checking dependencies in R code ... OK
* checking S3 generic/method consistency ... OK
* checking replacement functions ... OK
* checking foreign function calls ... OK
* checking R code for possible problems ... [10s] OK
* checking Rd files ... OK
* checking Rd metadata ... OK
* checking Rd cross-references ... OK
* checking for missing documentation entries ... OK
* checking for code/documentation mismatches ... OK
* checking Rd \usage sections ... OK
* checking Rd contents ... OK
* checking for unstated dependencies in examples ... OK
* checking contents of 'data' directory ... OK
* checking data for non-ASCII characters ... OK
* checking data for ASCII and uncompressed saves ... OK
* checking installed files from 'inst/doc' ... OK
* checking files in 'vignettes' ... OK
* checking examples ... ERROR
Running examples in 'PantaRhei-Ex.R' failed
The error most likely occurred in:

> ### Name: check_balance
> ### Title: Checks the mass balance of the flows involved
> ### Aliases: check_balance
> 
> ### ** Examples
> 
> nodes <- data.frame(ID=c("A","B","C"), x=1:3, y=1:3, dir=c("right","right","stock"))
> flows <- data.frame(from=c("A","B"), to=c("B","C"), quantity=c(10,10))
> check_balance(nodes,flows)
Error in nchar(nodes$ID) : 'nchar()' requires a character vector
Calls: check_balance -> parse_nodes
Execution halted
* checking for unstated dependencies in vignettes ... OK
* checking package vignettes in 'inst/doc' ... OK
* checking re-building of vignette outputs ... [3s] WARNING
Error(s) in re-building vignettes:
--- re-building 'panta-rhei.Rmd' using rmarkdown
Quitting from lines 51-70 (panta-rhei.Rmd) 
Error: processing vignette 'panta-rhei.Rmd' failed with diagnostics:
operator '/' not meaningful for units
--- failed re-building 'panta-rhei.Rmd'

SUMMARY: processing the following file failed:
  'panta-rhei.Rmd'

Error: Vignette re-building failed.
Execution halted

* checking PDF version of manual ... OK
* DONE
Status: 1 ERROR, 1 WARNING