feat: handle errors more gracefully

app.py

@@ -35,19 +35,25 @@ def respond(
 
     response = ""
 
-    for message in client.chat_completion(
-        messages,
-        max_tokens=max_tokens,
-        stream=True,
-        temperature=temperature,
-        top_p=top_p,
-    ):
-        token = message.choices[0].delta.content
+    try:
+        for message in client.chat_completion(
+            messages,
+            max_tokens=max_tokens,
+            stream=True,
+            temperature=temperature,
+            top_p=top_p,
+        ):
+            token = message.choices[0].delta.content
 
-        if token:
-            response += token
+            if token:
+                response += token
 
-        yield response
+            yield response
+    except ValueError as e:
+        print("ERROR:", e)
+        raise gr.Error("We have some trouble connecting to the model. Please try again later.")
+    except Exception as e:
+        raise gr.Error("An unknown error occurred. Please try again later.")
 
 """
 For information on how to customize the ChatInterface, peruse the gradio docs: https://www.gradio.app/docs/chatinterface