What should I do if the secondary web page cannot be opened?

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If the secondary webpage cannot be opened, you can troubleshoot network problems, clear the browser cache, use other browsers, check for URL spelling errors, check the configuration and server status of the webpage, ensure that there are no errors on the page itself, check the access permissions of specific pages and contact the website. Contact the administrator or technical support to resolve the problem. PHP Chinese website welcomes everyone to come and learn.