After modifying the .htaccess file
What is the problem that only certain specific pages are getting 404 errors?
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Page link changes: After modifying the .htaccess file, the structure of the page's permalinks may change, resulting in the old links no longer being available. It is recommended to clear the WordPress permalink cache as follows:
Go to the WordPress backend and navigate to Settings -> Fixed Links.
Without changing anything, click "Save Changes", which will refresh the fixed link settings and fix the 404 error.3 weeks ago