fix CORS

app.py

@@ -10,6 +10,7 @@ from brother_ql.backends.helpers import send
 from brother_ql.conversion import convert
 from brother_ql.raster import BrotherQLRaster
 from fastapi import FastAPI, HTTPException
+from fastapi.middleware.cors import CORSMiddleware
 from PIL import Image, ImageOps
 from pydantic import BaseModel, Field
 from pylibdmtx.pylibdmtx import encode
@@ -19,6 +20,13 @@ if not hasattr(Image, "ANTIALIAS"):
 
 app = FastAPI(title="QL-1060N Stacked Barcode Printer")
 
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["https://grocy-zyczliwa.oleszczyk.eu"],
+    allow_methods=["POST"],
+    allow_headers=["*"],
+)
+
 
 @lru_cache(maxsize=256)
 def make_code128(data: str) -> Image.Image: