I tried the v2.2 under Linux and Windows, none of them work anymore.
In Windows, I get the following error:
Running grammalecte failed with message: Error: Command failed: "C:\Program --only_when_errors --with_spell_sugg --json --file
Traceback (most recent call last):
  File line 382, in <module>
    main()
  File line 224, in main
    sText = oGrammarChecker.getParagraphErrorsAsJSON(i, sText, bContext=xArgs.context, bEmptyIfNoErrors=xArgs.only_when_errors, \
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File line 70, in getParagraphErrorsAsJSON
    aGrammErrs, aSpellErrs = self.getParagraphErrors(sText, dOptions, bContext, bSpellSugg, bDebug)
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File line 55, in getParagraphErrors
    aSpellErrs = self.oSpellChecker.parseParagraph(sText, bSpellSugg)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File line 190, in parseParagraph
    for lSugg in self.suggest(dToken['sValue']):
  File line 295, in suggest
    lSuggs = self.oMainDic.suggest(sWord, nSuggLimit, True)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File line 232, in suggest
    self._splitTrailingNumbers(oSuggResult, sWord)
  File line 245, in _splitTrailingNumbers
    oSuggResult.addSugg(m.group(1) + "�" + st.numbersToExponent(m.group(2)))
  File line 63, in addSugg
    st.showDistance(self.sSimplifiedWord, st.simplifyWord(sSugg))
  File line 262, in showDistance
    print(s1, "\u2260", s2, "\tDL:", nDL, "\tS4:", nS4, "\tJW:", fJW)
  File "C:\Program line 19, in encode
    return codecs.charmap_encode(input,self.errors,encoding_table)[0]
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
UnicodeEncodeError: 'charmap' codec can't encode character '\u2260' in position 0: character maps to <undefined>