999: plot save issue "Error in grid.Call.graphics", "invalid font type"

[MatthieuStigler]

Get often this message:

Error in grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y, : invalid font type Calls: ... drawDetails -> drawDetails.text -> grid.Call.graphics In addition: There were 33 warnings (use warnings() to see them) Execution halted

For example in: chet: /home/covid19/covid

Discussed in:

• https://stackoverflow.com/questions/53723752/rscript-invalid-font-type-in-ggplot
• https://github.com/thomasp85/ggraph/issues/152: use extrafont::loadfonts()?

To do:

• make reprex?
• use --vanilla in mat_99_run_Rfiles?