diff --git a/.env.gcp.yaml.example b/.env.gcp.yaml.example
index c878de07..c8d8a8c6 100644
--- a/.env.gcp.yaml.example
+++ b/.env.gcp.yaml.example
@@ -13,3 +13,5 @@ AZURE_OPENAI_API_BASE: your_secret_here
 AZURE_OPENAI_API_VERSION: your_secret_here
 AZURE_OPENAI_API_KEY: your_secret_here
 KAY_API_KEY: your_secret_here
+ROBOCORP_ACTION_SERVER_URL: https://dummy-action-server.robocorp.link
+ROBOCORP_ACTION_SERVER_KEY: dummy-api-key
diff --git a/backend/app/server.py b/backend/app/server.py
index 82fdd920..074f7292 100644
--- a/backend/app/server.py
+++ b/backend/app/server.py
@@ -1,3 +1,5 @@
+import os
+import logging
 from pathlib import Path
 
 import orjson
@@ -7,6 +9,8 @@
 from app.api import router as api_router
 from app.upload import ingest_runnable
 
+logger = logging.getLogger(__name__)
+
 app = FastAPI(title="OpenGPTs API")
 
 
@@ -24,7 +28,12 @@ def ingest_files(files: list[UploadFile], config: str = Form(...)) -> None:
     return ingest_runnable.batch([file.file for file in files], config)
 
 
-app.mount("", StaticFiles(directory=str(ROOT / "ui"), html=True), name="ui")
+ui_dir = str(ROOT / "ui")
+
+if os.path.exists(ui_dir):
+    app.mount("", StaticFiles(directory=ui_dir, html=True), name="ui")
+else:
+    logger.warn("No UI directory found, serving API only.")
 
 if __name__ == "__main__":
     import uvicorn