Update app/router.py

app/router.py

@@ -1,4 +1,8 @@
-
+from fastapi import FastAPI, HTTPException
+from fastapi.responses import HTMLResponse
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.middleware.gzip import GZipMiddleware
+from pydantic import BaseModel
 # -------------------------------------------------------
 # Local modules
 # -------------------------------------------------------