Update app.py

app.py

@@ -30,11 +30,14 @@ def generate(message, history, model, system_prompt,
     history_openai_format = [{"role": "system", "content": system_prompt}]
     for user, assistant in history:
         if isinstance(user, tuple):  # there were files
+            mime_type = get_mimetype(filepath)
+            if not mime_type.contains('image'):
+                raise gradio.Error("Momenteel zijn alleen afbeeldingen ondersteund als bijlagen 💥!", duration=5)
             content = [
                 {"type": "image_url",
                  # for some reason you don't get the same image format in history as in message
                  "image_url": {"url": process_image({'path': filepath,
-                                                     'mime_type': get_mimetype(filepath)})}}
+                                                     'mime_type': mime_type})}}
                 for filepath in user]
 
             history_openai_format.append(