Error on PHPswitcher

Hello, i found a error when use PHPswitcher, i think must be a bug in the new version. Today when i try to install a new fresh wordpress install using the version 7.0.22 i found this error on logs:

The web fail with a 503

[Tue Aug 22 14:02:01.480175 2017] [proxy:error] [pid 19510:tid 140280736999168] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /run/phpswitcher/psw7.0-fpm-pruebaphp7.demo.mydomain.com.sock (pruebaphp7.demo.mydomain.com) failed
[Tue Aug 22 14:02:01.480222 2017] [proxy:error] [pid 19510:tid 140280736999168] AH00959: ap_proxy_connect_backend disabling worker for (pruebaphp7.demo.desarrolloc2.com) for 0s
[Tue Aug 22 14:02:01.480231 2017] [proxy_fcgi:error] [pid 19510:tid 140280736999168] [client 192.168.0.130:1988] AH01079: failed to make connection to backend: httpd-UDS, referer: http://pruebaphp7.demo.desarrolloc2.com/wp-login.php

I have got this error only when use this version. I test all other versions and run perfect.

Is this a Bug ?? need this version.

My data:
i-MSCP 1.4.3
Build: 20170417
Codename: Zimmer
debian 3.16.0-4-amd64 #1 SMP Debian 3.16.43-2 (2017-04-30) x86_64 GNU/Linux
Last phpswitcher version. 4.0.0

Any suggestio or help ?? thank you in advanced.

Hello, I follow your recomendations:

1 Update debian and the panel to the last version.
2 Now when i try to change to other version i can change, but i neverchange to ohter version, is always on progress, you can see the attach.

i can change the php version one time, but never more.

At this moment i dont see errors on the logs form domain.

Any solution or suggestion ?? Need logs ??

I have got this on a virtual machine, i can do snapshoth and fast test if you need.

Thank you in advanced.

You can see the image here:

http://imgur.com/ogbP99v

Sorry more info, if i use your command (perl /var/www/imscp/engine/setup/imscp-reconfigure -danv) the panel crash and i have got this error

[ERROR] main::setupDbTasks: iMSCP::Stepper::_callback: Can't use an undefined value as a HASH reference at /var/www/imscp/engine/setup/../PerlLib/iMSCP/EventManager.pm line 208.
...propagated at /var/www/imscp/engine/setup/../PerlLib/iMSCP/DbTasksProcessor.pm line 487.

And the pannel is inaccessible. (Down)

Sorry for my newbe question :(, how i can apply this patch only ??

I know how update the entery distribution or use the dev version but not this, sorry.

Thank you in advanced.

Best regards.

Note: i reffer with commands fomr git or similar, i can do a manual patch on the file.

Sorry for the last question, i think i can do this with commands or similar. (wrong)

When change this line i can use your command and all is running perfect,i can change the version without problems.

Thank you for the plugging and a great support.

Best regards.