Nginx gives 404 for files with the name in Hindi

I had a WordPress site running on GoDaddy CPanel hosting. The site uses Hindi (the Indian Language). It runs fine with GoDaddy. Once I migrate it to Digital Ocean VPS with PHP 7 and Nginx 1.14.0, a few images give 404 error messages.(I’m using Easyengine with Ubuntu 16.04 on Digitalocean with Redis and php7.)

After debugging, I found that Nginx shows a 404 error for images which have the name written in the Hindi language; for English names it works fine.

Could anyone let me know what font setting I need to do for Nginx to detect static files with Hindi file names?