500 internal server error, when deploying my next js i18n to server

I have not any build issues, I think the issue is in next i18 config, or somewhere else. I tried to deploy my app in netlify without i18 config, and it worked, but now with i18 config, i get 500 internal server error. In Local it works normal. my website url https://anco.ac/ru

I’m not seeing 500 on your site. Is there a specific URL where that happens?