Update app.py

fix the secret file error

app.py

@@ -144,14 +144,18 @@ def update_metrics(placeholder):
 
 # --- SIDEBAR ---
 with st.sidebar:
-    st.header("🔐 Authentication")
+st.header("🔐 Authentication")
     
-    # Check Secrets
-    if "GROQ_API_KEY" in st.secrets:
-        st.session_state['groq_api_key'] = st.secrets["GROQ_API_KEY"]
-        st.session_state['is_key_valid'] = True
-    
-    # Manual Entry
+    # 1. SAFELY Check Secrets (Prevents FileNotFoundError)
+    try:
+        if "GROQ_API_KEY" in st.secrets:
+            st.session_state['groq_api_key'] = st.secrets["GROQ_API_KEY"]
+            st.session_state['is_key_valid'] = True
+    except FileNotFoundError:
+        # If secrets.toml doesn't exist, ignore and fall back to manual entry
+        pass
+
+    # 2. Manual Entry Logic
     if 'is_key_valid' not in st.session_state:
         st.session_state['is_key_valid'] = False