Update app.py

app.py

@@ -319,7 +319,7 @@ def process_entry(entry, i, video_width, video_height, add_voiceover, target_lan
         color='yellow',
         stroke_color='black',  # Border color
         stroke_width=2,  # Border thickness
-        font_size=int(video_height // 20),
+        fontsize=int(video_height // 20),
         size=(int(video_width * 0.8), None)
     ).with_start(entry["start"]).with_duration(entry["end"] - entry["start"]).with_position(('bottom')).with_opacity(0.8)