Error doing Stanza sentence boundary detection in Vietnamese

from argostranslate.translate import get_installed_languages

languages_list = get_installed_languages()
languages = {l.code: l for l in languages_list}

trans = languages['vi'].get_translation(languages['en'])

text = 'thuc luc di em trai <@!12345>'
res = trans.translate(text)
Traceback (most recent call last):
  File "test.py", line 9, in <module>
    res = trans.translate(text)
  File "/home/username/.local/lib/python3.7/site-packages/argostranslate/translate.py", line 52, in translate
    return self.hypotheses(input_text, num_hypotheses=1)[0].value
  File "/home/username/.local/lib/python3.7/site-packages/argostranslate/translate.py", line 275, in hypotheses
    paragraph, num_hypotheses
  File "/home/username/.local/lib/python3.7/site-packages/argostranslate/translate.py", line 160, in hypotheses
    self.pkg, paragraph, self.translator, num_hypotheses
  File "/home/username/.local/lib/python3.7/site-packages/argostranslate/translate.py", line 385, in apply_packaged_translation
    stanza_sbd = stanza_pipeline(input_text)
  File "/home/username/.local/lib/python3.7/site-packages/stanza/pipeline/core.py", line 166, in __call__
    doc = self.process(doc)
  File "/home/username/.local/lib/python3.7/site-packages/stanza/pipeline/core.py", line 160, in process
    doc = self.processors[processor_name].process(doc)
  File "/home/username/.local/lib/python3.7/site-packages/stanza/pipeline/tokenize_processor.py", line 88, in process
    no_ssplit=self.config.get('no_ssplit', False))
  File "/home/username/.local/lib/python3.7/site-packages/stanza/models/tokenize/utils.py", line 165, in output_predictions
    st0 = text.index(part, char_offset) - char_offset
ValueError: substring not found