enable cors

app/server.py

@@ -1,11 +1,23 @@
-from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
 from fastapi.responses import RedirectResponse
 from langserve import add_routes
+from fastapi import FastAPI
 
 from rag_redis.chain import chain as rag_redis_chain
 
 app = FastAPI()
 
+origins = ["*"]
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=origins,
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+
 
 @app.get("/")
 async def redirect_root_to_docs():