.htaccess HELP

It can have a profound effect – such as stopping the whole site dead in its tracks. You don’t need an ErrorDocument line in your .htaccess file. WP manages your 404s.

Any idea how I can put it back. Check https://www.codbo.co.uk you will see how screwed and desperate for help I am.
I’m not good with wordpress

Try resetting your custom permalinks back to the default setting. If this works, then review Using_Permalinks before setting a custom permalink structure back up again.

That worked. Thanks a lot mate!

Glad I could help ??