Deleted or renamed pages.
Incorrect permalink settings.
Typos in links.
Go to Settings > Permalinks and click Save Changes to refresh permalinks.
Install a plugin like "Broken Link Checker" to find all broken links.
Redirect missing pages using a plugin like "Redirection."
Regularly scan your site for broken links.
Always set up redirects when deleting pages.
Tip: Sugar Pixels Ai daily backups let you restore content if something was accidentally removed.