Unable to create a DocumentTermMatrix for MIGPARL

[dschuele]

polmineR 0.8.8 is unable to create a DocumentTermMatrix for the MIGPARL corpus and returns this error message
"Error in h(simpleError(msg, call)) :
error in evaluating the argument 'x' in selecting a method for function 'as.DocumentTermMatrix': 'nrow, ncol' invalid"
The same code works fine for the GERMAPARL corpus.

library(polmineR)

dtm1 <- subset("GERMAPARL",
               party = "parteilos") |>
  split(s_attribute = "date") |>
  split(s_attribute = "speaker") |>
  as.DocumentTermMatrix(p_attribute = "word")

dtm2 <- subset("MIGPARL",
              party = "parteilos") |>
  split(s_attribute = "date") |>
  split(s_attribute = "speaker") |>
  as.DocumentTermMatrix(p_attribute = "word")