Fix: py3 can't concat str to bytes
@ -98,7 +98,7 @@ def on_message(message, data):
def progress(filename, size, sent):
baseName = os.path.basename(filename)
if IS_PY2:
if IS_PY2 or isinstance(baseName, bytes):
t.desc = baseName.decode("utf-8")
else:
t.desc = baseName