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

> ### Name: make_switch_data
> ### Title: Summarize data into time-to-switch from initial AOI.
> ### Aliases: make_switch_data make_switch_data.onset_data
> 
> ### ** Examples
> 
> data(word_recognition)
> data <- make_eyetrackingr_data(word_recognition, 
+                                participant_column = "ParticipantName",
+                                trial_column = "Trial",
+                                time_column = "TimeFromTrialOnset",
+                                trackloss_column = "TrackLoss",
+                                aoi_columns = c('Animate','Inanimate'),
+                                treat_non_aoi_looks_as_missing = TRUE
+ )
> response_window <- subset_by_window(data, window_start_time = 15500, window_end_time = 21000, 
+                                     rezero = FALSE)
Avg. window length in new data will be 5500
> inanimate_trials <- subset(response_window, grepl('(Spoon|Bottle)', Trial))
> onsets <- make_onset_data(inanimate_trials, onset_time = 15500, 
+                           fixation_window_length = 100, target_aoi='Inanimate')
Warning in make_onset_data(inanimate_trials, onset_time = 15500, fixation_window_length = 100,  :
  Smoothing in make_onset_data() using fixation_window_length_rows is experimental. We
            recommend looking closely at the output to validate it.
>                           
> df_switch <- make_switch_data(onsets, predictor_columns = "MCDI_Total", 
+              summarize_by = "ParticipantName")
> plot(df_switch, "MCDI_Total")
Column 'MCDI_Total' is numeric, performing median split for visualization.
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: <Anonymous> ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>
Execution halted