fix: only serve frontend if present in prod

src/main.py

@@ -1,7 +1,7 @@
 """
 Application root file: Inits the FastAPI application
 """
-
+import os.path
 from contextlib import asynccontextmanager
 from typing import AsyncGenerator
 
@@ -78,4 +78,5 @@ if settings.DISABLE_AUTH and (settings.ENVIRONMENT == Environment.LOCAL):
 
 app.include_router(api_router)
 
-app.frontend("/ui", directory="/app/static", fallback="index.html")
+if os.path.exists("/app/static"):
+	app.frontend("/ui", directory="/app/static", fallback="index.html")