JessyInk warning message on install/update

Windows 10, Inkscape 1.1-dev (a1a701c, 2020-05-28)
latest extensions from 4b1a1f5b
try to run JessyInk->Effects
get warning message telling me to "install/update..."
run install/update, get warning message:

jessyInk_install.py:40: ResourceWarning: unclosed file <_io.TextIOWrapper name='jessyInk.js' mode='r' encoding='cp1252'>
  script_elem.text = open(os.path.join(os.path.dirname(__file__), "jessyInk.js")).read()
ResourceWarning: Enable tracemalloc to get the object allocation traceback

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