Fixed absence of None check

modules/sender.py

@@ -77,7 +77,7 @@ async def send_content(app: PosterClient) -> None:
         else:
             caption = ""
 
-        if configGet("enabled", "posting", "submitted_caption") and (
+        if submitted is not None and configGet("enabled", "posting", "submitted_caption") and (
             (submitted["user"] not in app.admins) or (configGet("ignore_admins", "posting", "submitted_caption") is False)
         ):
             caption = f"{caption}\n\n{configGet('text', 'posting', 'submitted_caption')}\n"