Common reasons your links are redirecting to a 404 error

This documentation will go through and list out all the different reasons you may be experiencing your links being redirected to a 404 page not found error.

1. The most common reason is due to your permalinks settings in WordPress. If you have your permalinks set to Plain or to Custom but have nothing filled out in the Custom box, your links may result in a 404 error. To fix this, it is recommended that you use the Postname option for your permalinks setup. You can find the permalinks setup by going to WordPress > Settings > Permalinks page.
2. The second most common issue is that a page or post has the same name which can cause you to see a 404 error message. In this case, you will need to change the name of either the post or page.
3. Another reason is that the URL for the post or page no longer exists or is no longer working. You will want to make sure the destination URL is still a working URL.
4. If none of the above are reasons, the last issue would be that there is a hosting server misconfiguration. If this is the case, you will want to reach out to your host and see if they can help troubleshoot further as to why the pretty link isn't redirecting correctly.