Order page not working

Im not sure who should be the right ones for this issue.

I am using storefront theme and the order page is not working.

I did a search around and find some saying it is something to do with the theme while some claim dropping a code in the theme have solved the issue for them some were not successful.

the order page was working fine then suddenly it stopped have deactive plugins one by one but nothing happened.

Would appreciate a solution to this as fast as possible as there a customers waiting they were the ones who alerted us to the issue.

Thank you