Update app.py

app.py

@@ -642,7 +642,7 @@ iface = gr.ChatInterface(
         gr.Dropdown(["bs4", "trafilatura", "scrapy", "newspaper"], value="newspaper", label="Scraping Method"),
         gr.Slider(500, 10000, value=1500, step=100, label="Max characters to retrieve"),
         gr.Dropdown(["", "day", "week", "month", "year"], value="year", label="Time Range"),
-        gr.Dropdown(["all", "en", "fr", "de", "es", "it", "nl", "pt", "pl", "ru", "zh"], value="en", label="Language"),
+        gr.Dropdown(["", "all", "en", "fr", "de", "es", "it", "nl", "pt", "pl", "ru", "zh"], value="en", label="Language"),
         gr.Dropdown(["", "general", "news", "images", "videos", "music", "files", "it", "science", "social media"], value="", label="Category"),
         gr.Dropdown(
             ["google", "bing", "duckduckgo", "baidu", "yahoo", "qwant", "startpage"],