fix the issue

app.py

@@ -1393,14 +1393,11 @@ def search_knowledge_base(tenant_id: str, role: str, query: str):
 
 
 # Create Gradio interface
+# Note: some Gradio versions (especially older ones) do not support the `theme` argument
+# on `Blocks`. To keep the Docker image compatible across environments, we rely on
+# custom CSS for styling instead of passing a `theme` kwarg here.
 with gr.Blocks(
-    title="IntegraChat — MCP Autonomous Agent", 
-    theme=gr.themes.Soft(
-        primary_hue="cyan",
-        secondary_hue="blue",
-        neutral_hue="slate",
-        font=("Inter", "system-ui", "sans-serif")
-    ),
+    title="IntegraChat — MCP Autonomous Agent",
     css="""
     /* Global dark theme with simpler, basic colors */
     body, .gradio-container {

backend/api/services/agent_orchestrator.py

@@ -1894,6 +1894,14 @@ Answer:"""
             else:
                 web_guidance_section = ""
 
+            if has_web:
+                brief_web_instruction = (
+                    "11. **Brief Web Content**: If using web search, keep that portion of the response brief "
+                    "(2-4 sentences). Add professional disclaimers for legal/medical/financial topics.\n"
+                )
+            else:
+                brief_web_instruction = ""
+
             prompt = (
                 f"<system>\n"
                 f"You are an assistant helping tenant {req.tenant_id}. "
@@ -1923,7 +1931,7 @@ Answer:"""
                 f"8. **Directness**: Get straight to the point - provide the answer the user needs without unnecessary preamble.\n"
                 f"9. **Actionability**: If the question requires steps or actions, provide clear, actionable guidance.\n"
                 f"10. **Citation**: When referencing specific sources, indicate which source(s) you used (e.g., '[RAG]', '[WEB]').\n"
-                f"{'11. **Brief Web Content**: If using web search, keep that portion of the response brief (2-4 sentences). Add professional disclaimers for legal/medical/financial topics.\n' if has_web else ''}"
+                f"{brief_web_instruction}"
                 f"</instructions>\n\n"
                 f"If the information is incomplete, explain what can and cannot be concluded from the available data. "
                 f"Focus on giving the user exactly what they need—clear guidance, accurate facts, and practical steps whenever possible.\n\n"