Please try using another browser first and check if the same error occurs in WordPress.
If the issue does not occur after changing the browser, there may be a problem with the browser you normally use. Please try the following methods.
If you are using Google Chrome
clear all cache and cookies
STEP 1: Enter "chrome://settings/clearBrowserData" in the address bar.
STEP 2: Clear browsing history data.
A pop-up window will appear asking you to clear your browsing history data. Follow the steps below.
- Site data such as cookies and plug-in data
- Cached images and files
Please check the above and press the delete data button.
Clear your DNS cache and renew your IP address
Click here to learn how to clear the DNS cache on your PC.
Socket pool cleanup
STEP 1: Enter "chrome://net-internals/#sockets" in the address bar.
STEP 2: Press the Flush socket pools button to clean up.
If the error persists after trying the above, try resetting your browser.
If you implement this, the "startup page, new tab, search engine, pinned tab" will be reset.
In addition, extension functions will be disabled and temporary data such as cookies will be deleted.
Bookmarks, history, and saved passwords remain intact.