Update app.py

app.py

@@ -49,9 +49,9 @@ def main():
     st.set_page_config(page_title="Image Storyteller")
 
     st.header("Image to Audio")
-    length = st.number_input("Length of the Story",value=None)
-    if length is None:
-        length = 20
+    length = st.number_input("Length")
+    if not length or length == 0.0:
+        length = 10
     uploaded_file = st.file_uploader("Choose an Image", type="jpg")