Can no longer create subdomains.

This has stopped working. Every time I try to create a subdomain it pauses for a while then reports the following:

"Error: phpinimng failed: invoke-rc.d: initscript plesk-php70-fpm, action "status" failed.
invoke-rc.d: initscript plesk-php70-fpm, action "status" failed.
Service plesk-php70-fpm is down after attempt to start it"

I tried this on a couple of my domains with different versions of php. I also tried creating the target folder first and trying but I still got the same...

Can no longer create subdomains.