Resolved Customers unable to create subdomains

[H9k]

Hi there!
I am running the latest Plesk 17.5 on Ubuntu 16.04, and customers are unable to create subdomains.
If they try, they get this error:

Error: Unable to create a domain: there are no available PHP handlers.

However, I am able, when logged in as admin, to create subdomains for them without problems.
I have the following PHP handlers activated in Plesk:

• 5.6 FastCGI
• 5.6 FPM
• 7.0 OS vendor FastCGI
• 7.0 OS vendor FPM
• 7.0 FastCGI
• 7.0 FPM
• 7.1 FastCGI
• 7.1 FPM

I found this article: Cannot create subdomain: there are no available PHP handlers however it is related to Plesk for Windows.

What can I do to fix this problem?

 

[H9k]

I'm still having the issue... am I the only one?

 

[IgorG]

Please contact Plesk Support Team and you will get fast resolution of this issue, or submit detailed request to Reports and I will forward it to developers for the further investigation.

 

[H9k]

In case someone is interested, the KB article Cannot create subdomain: there are no available PHP handlers actually also applies to Plesk for Linux.
The article was updated to reflect that, and I can confirm that replacing the Availability.php file indeed fixes the problem for me on Ubuntu