Problem with canonical url

Hello!

I hope you’re doing well 🙂

The first link is non-standard, but not necessarily incorrect. I don’t know which tool you’re using to assess this, but it’s incomplete in its reading. Query arguments without prepended slashes are allowed.

For verbose background information, see rfc3986 (effective since January 2005!), which restores rfc1808, which state the slash is implied if omitted. Both of these are ultimately superseded by rfc7320, but it doesn’t change this fact.

So, you can ignore this issue.

Now, you may wish to switch to pretty permalinks (/path/to/page/), instead of ugly permalinks (?p=9928). Pretty permalinks give Google more information for indexing, which will ultimately help your site ranking better.

You can change this at /wp-admin/options-permalink.php. I suggest using this custom structure:

/%category%/%postname%/

I hope this helps 🙂 Cheers!