Running examples in 'httk-Ex.R' failed
The error most likely occurred in:

> ### Name: calc_css
> ### Title: Find the steady state concentration and the day it is reached.
> ### Aliases: calc_css
> ### Keywords: Steady-State
> 
> ### ** Examples
> 
> 
> calc_css(chem.name='Bisphenol-A',doses.per.day=5,f=.001,output.units='mg/L')
Warning in parameterize_pbtk(chem.cas = NULL, chem.name = "Bisphenol-A",  :
  Clint is provided as a distribution.
Warning in parameterize_pbtk(chem.cas = NULL, chem.name = "Bisphenol-A",  :
  Funbound.plasma adjusted for in vitro partioning (Pearce, 2017).
Warning in available_rblood2plasma(chem.cas = chem.cas, species = species,  :
  Human in vivo measured Rblood2plasma used.
$avg
[1] 0.334

$frac
[1] 0.9493

$max
[1] 0.3614

$the.day
[1] 2

> 
> parms <- parameterize_3comp(chem.name='Bisphenol-A')
Warning in parameterize_pbtk(chem.cas = chem.cas, chem.name = chem.name,  :
  Clint is provided as a distribution.
Warning in parameterize_pbtk(chem.cas = chem.cas, chem.name = chem.name,  :
  Funbound.plasma adjusted for in vitro partioning (Pearce, 2017).
Warning in available_rblood2plasma(chem.cas = chem.cas, species = species,  :
  Human in vivo measured Rblood2plasma used.
> parms$Funbound.plasma <- .07
> calc_css(parameters=parms,model='3compartment')
$avg
[1] 7.3

$frac
[1] 4.428

$max
[1] 7.796

$the.day
[1] 0

> 
> out <- solve_pbtk(chem.name = "Bisphenol A",
+   days = 50,                                   
+   daily.dose=1,
+   doses.per.day = 3)
Warning in parameterize_pbtk(chem.cas = NULL, chem.name = "Bisphenol A",  :
  Clint is provided as a distribution.
Warning in parameterize_pbtk(chem.cas = NULL, chem.name = "Bisphenol A",  :
  Funbound.plasma adjusted for in vitro partioning (Pearce, 2017).
Warning in available_rblood2plasma(chem.cas = chem.cas, species = species,  :
  Human in vivo measured Rblood2plasma used.
Human amounts returned in umol and concentration returned in uM units.
AUC is area under plasma concentration in uM * days units with 
Rblood2plasma = 0.79.
> plot.data <- as.data.frame(out)
> 
> css <- calc_analytic_css(chem.name = "Bisphenol A")
Warning in parameterize_pbtk(default.to.human = FALSE, adjusted.Funbound.plasma = TRUE,  :
  Clint is provided as a distribution.
Warning in parameterize_pbtk(default.to.human = FALSE, adjusted.Funbound.plasma = TRUE,  :
  Funbound.plasma adjusted for in vitro partioning (Pearce, 2017).
Warning in available_rblood2plasma(chem.cas = chem.cas, species = species,  :
  Human in vivo measured Rblood2plasma used.
Plasma concentration returned in uM units.
> library("ggplot2")
Error in library("ggplot2") : there is no package called 'ggplot2'
Execution halted