Catch and show generation errors

app.py

@@ -58,7 +58,10 @@ def generate(
     seed = seed + 1
     formatted_prompt = format_prompt(prompt, history, system_prompt)
 
-    stream = client.text_generation(formatted_prompt, **generate_kwargs, stream=True, details=True, return_full_text=False)
+    try:
+        stream = client.text_generation(formatted_prompt, **generate_kwargs, stream=True, details=True, return_full_text=False)
+    except Exception as e:
+        raise gr.Error(f"Error while generating: {e}")
     output = ""
 
     for response in stream: