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

> ### Name: make_productions_page
> ### Title: Generate HTML page with productions list and summary chart
> ### Aliases: make_productions_page
> 
> ### ** Examples
> 
> 
> # Load example data and convert it to a lattes list
> CV.dir <- system.file("extdata", package="ChocoLattes")
> 
> # Define the aliases of authors "Felipe Campelo" and "Lucas S. Batista":
> # (all aliases will be converted to the first name provided for each author)
> my.aliases <- list(c("Felipe Campelo",
+                      "Felipe Campelo Franca Pinto",
+                      "Felipe Campelo F. Pinto",
+                      "F.C.F. Pinto"),
+                    c("Lucas S. Batista",
+                      "Lucas Batista",
+                      "Lucas de Souza Batista",
+                      "Lucas Souza Batista"))
> 
> lattes.list <- lattes_to_list(CV.dir         = CV.dir,
+                               author.aliases = my.aliases)
> 
> 
> # Build productions page:
> make_productions_page(lattes.list,
+                       chart.type     = "ggplot2",
+                       h1.title       = "ORCS Lab",
+                       h2.title       = "UFMG, Brazil",
+                       language       = "EN")


processing file: prod_page.Rmd
Error in namespaceExport(ns, exports) : 
  undefined exports: %s!=%, %s!==%, %s+%, %s<%, %s<=%, %s==%, %s===%, %s>%, %s>=%, %stri!=%, %stri!==%, %stri+%, %stri<%, %stri<=%, %stri==%, %stri===%, %stri>%, %stri>=%, stri_datetime_add<-, stri_sub<-, stri_subset<-, stri_subset_charclass<-, stri_subset_coll<-, stri_subset_fixed<-, stri_subset_regex<-, stri_c, stri_c_list, stri_cmp, stri_cmp_eq, stri_cmp_equiv, stri_cmp_ge, stri_cmp_gt, stri_cmp_le, stri_cmp_lt, stri_cmp_neq, stri_cmp_nequiv, stri_compare, stri_conv, stri_count, stri_count_boundaries, stri_count_charclass, stri_count_coll, stri_count_fixed, stri_count_regex, stri_count_words, stri_datetime_add, stri_datetime_create, stri_datetime_fields, stri_datetime_format, stri_datetime_fstr, stri_datetime_now, stri_datetime_parse, stri_datetime_symbols, stri_detect, stri_detect_charclass, stri_detect_coll, stri_detect_fixed, stri_detect_regex, stri_dup, stri_duplicated, stri_duplicated_any, stri_enc_detect, stri_enc_detect2, stri_enc_fromutf32, stri_enc_get, stri_enc_inf
Calls: make_productions_page ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>
Execution halted