Invalid DNS configuration

I have deployed my next.js app on vercel, configured domain and made changes on hostinger side to add CNAME & A Record…but postsmartr.com is showing Invalid Configuration. Due to which www.postsmartr.com is working but postsmartr.com is not working. Please guide

I have the same issue here. I need help resolving this issue. Please, any help is appreciated. I have set up the right details in my DNS Records.