Update app.py

app.py

@@ -102,7 +102,7 @@ def generate(
         prompt = base_prompt + chat_prompt
         stream = client_s.generate_stream(prompt, **generate_kwargs)
     else :
-        pass
+        ValueError("Unsupported version of the Coding assistant")
         
     output = ""
     previous_token = ""
@@ -133,7 +133,7 @@ def bot(
     top_p=0.95,
     repetition_penalty=1.0,
     chat_mode=None,
-    version="starchat-alpha", 
+    version="StarChat-alpha", 
 ):
     # concat history of prompts with answers expect for last empty answer only add prompt
     if version == "StarCoder-gradio" :
@@ -232,7 +232,7 @@ _Note:_ this is an internal chat playground - **please do not share**. The deplo
                 )
                 version = gr.Dropdown(
                     ["StarCoder-gradio", "StarChat-alpha"],
-                    value="StarChat-gradio",
+                    value="StarCoder-gradio",
                     label="Version",
                     info="",
                 )