If you made changes on permalinks structured then you will get “404 error” on your website to resolve this issue you need to follow the below steps.
1. First, you need to install the Simple 301 Redirects and activate it on your WordPress dashboard.
2. You will find this option in WordPress Dashboard -> Then you can navigate to Settings -> 301 Redirects -> Enter the old Previous URL Structure into the “ Request ” and Enter Current URL Structure into the ” Destination ” and then click save.

Once you have added these two fields, save the changes. This will now tell any search engine traffic that comes into the old links to go to the new permalink structure.
That’s it for this tutorial!
We hope it helped you. If you have any feedback or questions, then please share them in the comments section below.