How to resolve a 404 Not Found error in my online store?

May i know how to fix this problem , thanks

Our Store show

PAGE NOT FOUND

We’re sorry, but the page you requested could not be found.

Hi, @SoraCho !

Welcome to the Shopify Community. Happy to look into this 404 error with you, I understand it will be important to get this resolved as soon as possible. What are you clicking on when you receive this error? Does it happen on more than one page? Any further details you can provide about how you are seeing this error will be helpful for troubleshooting.

If you are clicking the links in your main menu and it is leading to this error, then you will need to check the link you have selected in your navigation settings. These settings can be found under Online Store > Navigation > Main Menu. The steps to edit these links are listed under editing a menu in our Help Center.

Once we have more information about what has led you to this error, we will be able to troubleshoot further. Thanks!