fix some stuff (#12292)

Co-authored-by: Erick Friis <erick@langchain.dev>

libs/cli/langchain_cli/project_template/app/server.py

@@ -0,0 +1,12 @@
+from fastapi import FastAPI
+from langserve import add_routes
+
+app = FastAPI()
+
+# Edit this to add the chain you want to add
+add_routes(app, NotImplemented)
+
+if __name__ == "__main__":
+    import uvicorn
+
+    uvicorn.run(app, host="0.0.0.0", port=8001)