Doesn't show webistes as wordpress eventho those are wordpress

[vidura2]

I ran a scan for the 1st time on a wordpress website and it did it perfectly
after that I tried to run that same website with
wpscan --url -U -P /usr/share/wordlists/passwords/rockyou.txt --password-attack xmlrpc

but it says "Scan Aborted: The remote website is up, but does not seem to be running WordPress."