from django import dispatch

entry_changed = dispatch.Signal(
    providing_args=["user", "old_msgstr", "old_fuzzy", "pofile", "language_code"]
)

post_save = dispatch.Signal(
    providing_args=["language_code", "request"]
)

from django import dispatch

entry_changed = dispatch.Signal()
post_save = dispatch.Signal()

Remove 'providing_args' kwarg from signals instanciation