URL Error

My Blog works fine until someone try to visit a specific post using Direct Link.
my Blog https://blog.ddeb.me , can be visited without any issue .
But if someone wanna visit https://blog.ddeb.me/2012/07/23/স্কুল-জীবনে-আমার-নস্টালজ/ Then internal error occurred.
Why???
please help me.
Note: It doesn’t happen if the Post title is English.

Hi @debashishdab,

Can you please provide a repo or code-sandbox with your code? This is especially helpful to find solutions of technical issues with specific code

It seems this is not happening with any other route like:

Maybe this is an issue with the content of that specific post?