[+] добавил cors

cmd/main.go

@@ -5,6 +5,7 @@ import (
 	"jwt_service/internal/routes"
 
 	"github.com/gofiber/fiber/v2"
+	"github.com/gofiber/fiber/v2/middleware/cors"
 )
 
 func main() {
@@ -12,6 +13,11 @@ func main() {
 
 	app := fiber.New()
 
+	app.Use(cors.New(cors.Config{
+		AllowCredentials: true,
+		AllowOrigins:     "http://127.0.0.1", //Very important while using a HTTPonly Cookie, frontend can easily get and return back the cookie.
+	}))
+
 	routes.Setup(app)
 
 	app.Listen(":8000")