add validation

serve/gradio_web_server.py

@@ -115,13 +115,9 @@ def clear_history(request: gr.Request):
 def add_text(state, text, image, image_process_mode, request: gr.Request):
     # logger.info(f"add_text. ip: {request.client.host}. len: {len(text)}")
     print(text, image)
-    if not text:
+    if not text or not image:
         print("text empty")
-        raise gr.Error("Please provide a prompt.")
-
-    if not image:
-        print("image not provided")
-        raise gr.Error("Please provide an image.")
+        raise gr.Warning("Please provide a prompt and an image.")
 
     if len(text) <= 0 and image is None:
         state.skip_next = True