Добавлены cors и позволяет передавать None параметры в описании и интервале

main.py

@@ -4,6 +4,8 @@ from contextlib import asynccontextmanager
 from pydantic import BaseModel, Field
 from typing import Sequence
 from dotenv import load_dotenv
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import ORJSONResponse
 import asyncio
 import os
 from clickhouse_sqlalchemy import (
@@ -36,8 +38,8 @@ class HostBase(BaseModel):
     url: str
 
 class HostDescription(BaseModel):
-    description: str | None
-    delay: int | None
+    description: str | None =None
+    delay: int | None =None
     
 
 class HostLive(BaseModel):
@@ -123,6 +125,7 @@ class BackgroundTask:
 bgtask = BackgroundTask()
 
 
+
 @asynccontextmanager
 async def lifespan(app: FastAPI):
     # Load the ML model
@@ -139,6 +142,13 @@ async def lifespan(app: FastAPI):
 
 app = FastAPI(lifespan=lifespan)
 
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
 
 @app.get("/")
 async def show_hosts() -> Sequence[HostSchema]: