If cookies are disabled at your browser, go to Tools > Settings and allow it. You should consider going to your browser's support page for more accurate information.
Clear cookies from your web browser and then check again it will work fine.
Check the Help Section of your Web Browser to learn how (Different Browsers have Different Instructions)
Information about web pages stored in your web browser (apex)
The cookies are usually pass in HTML headers from the web server to the browser.
When you visit a website, the browser maintains cookies. These cookies help in faster loading of the web pages.
A "cookie" is a small piece of information sent by a web server to store on a web browser so it can later be read back from that browser. This is useful for having the browser remember some specific information.
Make sure you have cookies enabled in your web browser.
To turn on cookie functionality in your web browser, go to the browser's settings or preferences menu. Look for the "Privacy" or "Security" section, where you can find options related to cookies. Enable cookies by selecting options like "Allow all cookies" or "Enable cookies from sites." After making your selection, be sure to save the changes and refresh your browser for them to take effect.
Application
It appears the site is running fine. Have you tried troubleshooting your browser? Try deleting your cookies or another web browser; That usually does the trick.
It could happen because there's to many people on the web browser, and the web browser can't take that many people searching on it. And it also can be because there's overflows of people searching on the web browser and that's because it doesn't work sometimes. And what you can do is : Try closing the web browser, and then reopening it, and then maybe that will work.
Cookies is a small part of website that is sent to the browser. It improves the performance of the browser.