Running examples in ‘ndtv-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: render.d3movie
> ### Title: Render out a web-based animation of a networkDynamic object
> ###   using ndtv-d3 player app
> ### Aliases: render.d3movie
> 
> ### ** Examples
> 
> # render an interactive SVG animation of short.stergm.sim and open it in a browser
> data(short.stergm.sim)
> render.d3movie(short.stergm.sim)
No slice.par found, using
slice parameters:
  start:0
  end:25
  interval:1
  aggregate.dur:1
  rule:latest

Calculating layout for network slice from time  0 to 1
Calculating layout for network slice from time  1 to 2
Calculating layout for network slice from time  2 to 3
Calculating layout for network slice from time  3 to 4
Calculating layout for network slice from time  4 to 5
Calculating layout for network slice from time  5 to 6
Calculating layout for network slice from time  6 to 7
Calculating layout for network slice from time  7 to 8
Calculating layout for network slice from time  8 to 9
Calculating layout for network slice from time  9 to 10
Calculating layout for network slice from time  10 to 11
Calculating layout for network slice from time  11 to 12
Calculating layout for network slice from time  12 to 13
Calculating layout for network slice from time  13 to 14
Calculating layout for network slice from time  14 to 15
Calculating layout for network slice from time  15 to 16
Calculating layout for network slice from time  16 to 17
Calculating layout for network slice from time  17 to 18
Calculating layout for network slice from time  18 to 19
Calculating layout for network slice from time  19 to 20
Calculating layout for network slice from time  20 to 21
Calculating layout for network slice from time  21 to 22
Calculating layout for network slice from time  22 to 23
Calculating layout for network slice from time  23 to 24
Calculating layout for network slice from time  24 to 25
Calculating layout for network slice from time  25 to 26
caching 10 properties for slice 0
caching 10 properties for slice 1
caching 10 properties for slice 2
caching 10 properties for slice 3
caching 10 properties for slice 4
caching 10 properties for slice 5
caching 10 properties for slice 6
caching 10 properties for slice 7
caching 10 properties for slice 8
caching 10 properties for slice 9
caching 10 properties for slice 10
caching 10 properties for slice 11
caching 10 properties for slice 12
caching 10 properties for slice 13
caching 10 properties for slice 14
caching 10 properties for slice 15
caching 10 properties for slice 16
caching 10 properties for slice 17
caching 10 properties for slice 18
caching 10 properties for slice 19
caching 10 properties for slice 20
caching 10 properties for slice 21
caching 10 properties for slice 22
caching 10 properties for slice 23
caching 10 properties for slice 24
caching 10 properties for slice 25
wrote animation HTML file to /tmp/RtmpY6gWty/file530d55ec0f5a.html
opening local URL file:///tmp/RtmpY6gWty/file530d55ec0f5a.html in web browser
> 
> # render interactive widget in rmarkdown or RStudio plot window
> render.d3movie(short.stergm.sim,output.mode='htmlWidget')
No slice.par found, using
slice parameters:
  start:0
  end:25
  interval:1
  aggregate.dur:1
  rule:latest

Calculating layout for network slice from time  0 to 1
Calculating layout for network slice from time  1 to 2
Calculating layout for network slice from time  2 to 3
Calculating layout for network slice from time  3 to 4
Calculating layout for network slice from time  4 to 5
Calculating layout for network slice from time  5 to 6
Calculating layout for network slice from time  6 to 7
Calculating layout for network slice from time  7 to 8
Calculating layout for network slice from time  8 to 9
Calculating layout for network slice from time  9 to 10
Calculating layout for network slice from time  10 to 11
Calculating layout for network slice from time  11 to 12
Calculating layout for network slice from time  12 to 13
Calculating layout for network slice from time  13 to 14
Calculating layout for network slice from time  14 to 15
Calculating layout for network slice from time  15 to 16
Calculating layout for network slice from time  16 to 17
Calculating layout for network slice from time  17 to 18
Calculating layout for network slice from time  18 to 19
Calculating layout for network slice from time  19 to 20
Calculating layout for network slice from time  20 to 21
Calculating layout for network slice from time  21 to 22
Calculating layout for network slice from time  22 to 23
Calculating layout for network slice from time  23 to 24
Calculating layout for network slice from time  24 to 25
Calculating layout for network slice from time  25 to 26
caching 10 properties for slice 0
caching 10 properties for slice 1
caching 10 properties for slice 2
caching 10 properties for slice 3
caching 10 properties for slice 4
caching 10 properties for slice 5
caching 10 properties for slice 6
caching 10 properties for slice 7
caching 10 properties for slice 8
caching 10 properties for slice 9
caching 10 properties for slice 10
caching 10 properties for slice 11
caching 10 properties for slice 12
caching 10 properties for slice 13
caching 10 properties for slice 14
caching 10 properties for slice 15
caching 10 properties for slice 16
caching 10 properties for slice 17
caching 10 properties for slice 18
caching 10 properties for slice 19
caching 10 properties for slice 20
caching 10 properties for slice 21
caching 10 properties for slice 22
caching 10 properties for slice 23
caching 10 properties for slice 24
caching 10 properties for slice 25
Loading required namespace: htmlwidgets
Failed with error:  ‘there is no package called ‘htmlwidgets’’
loading ndtv-d3 animation widget...
Error in loadNamespace(name) : there is no package called ‘htmlwidgets’
Calls: render.d3movie ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>
Execution halted