Thanks for your response, i've retried the installation with the new configuration and the disk space problem has disappeared
But now it get stuck at :
Checking whether the package dependencies are resolved.
E: Unable to correct problems, you have held broken packages.
---X--- `apt-get` output ---------------------
Reading package lists...
Building dependency tree...
Reading state information...
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
plesk-base : Depends: dh-apparmor but it is not installable
plesk-core : Depends: python-libxml2 but it is not going to be installed
Depends: pigz but it is not installable
plesk-dns-bind-driver : Depends: libxmlrpc-c++8v5 but it is not installable
Depends: libxmlrpc-core-c3 but it is not installable
plesk-php56-imap : Depends: libc-client2007e but it is not installable
plesk-php56-mcrypt : Depends: libmcrypt4 but it is not installable
plesk-php70-imap : Depends: libc-client2007e but it is not installable
plesk-php70-mcrypt : Depends: libmcrypt4 but it is not installable
plesk-php71-imap : Depends: libc-client2007e but it is not installable
plesk-php71-mcrypt : Depends: libmcrypt4 but it is not installable
plesk-service-node-utilities : Depends: libxml-dumper-perl but it is not installable
Depends: sysv-rc-conf but it is not installable
psa-mail-driver-common : Depends: libopendkim10 (>= 2.8.0~beta0) but it is not installable
psa-php-configurator : PreDepends: php-fpm (>= 1:7.0) but it is not installable
Depends: php-imap but it is not installable
Depends: php-mbstring but it is not installable
sw-engine : Depends: libc-client2007e but it is not installable
Depends: libjpeg62 (>= 6b1) but it is not installable
Depends: libmcrypt4 but it is not installable
Depends: libxmlrpc-c++8v5 but it is not installable
Depends: libxmlrpc-core-c3 but it is not installable
sw-engine-cli-2.20 : Depends: libc-client2007e but it is not installable
Depends: libjpeg62 (>= 6b1) but it is not installable
Depends: libmcrypt4 but it is not installable
Depends: libxmlrpc-c++8v5 but it is not installable
Depends: libxmlrpc-core-c3 but it is not installable
---------------------- `apt-get` output ---X---
Collecting error details into the log file...
ERROR: Installation will not continue
The apg-get failed with the following message:
Reading package lists...
Building dependency tree...
Reading state information...
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
plesk-base : Depends: dh-apparmor but it is not installable
plesk-core : Depends: python-libxml2 but it is not going to be installed
Depends: pigz but it is not installable
plesk-dns-bind-driver : Depends: libxmlrpc-c++8v5 but it is not installable
Depends: libxmlrpc-core-c3 but it is not installable
plesk-php56-imap : Depends: libc-client2007e but it is not installable
plesk-php56-mcrypt : Depends: libmcrypt4 but it is not installable
plesk-php70-imap : Depends: libc-client2007e but it is not installable
plesk-php70-mcrypt : Depends: libmcrypt4 but it is not installable
plesk-php71-imap : Depends: libc-client2007e but it is not installable
plesk-php71-mcrypt : Depends: libmcrypt4 but it is not installable
plesk-service-node-utilities : Depends: libxml-dumper-perl but it is not installable
Depends: sysv-rc-conf but it is not installable
psa-mail-driver-common : Depends: libopendkim10 (>= 2.8.0~beta0) but it is not installable
psa-php-configurator : PreDepends: php-fpm (>= 1:7.0) but it is not installable
Depends: php-imap but it is not installable
Depends: php-mbstring but it is not installable
sw-engine : Depends: libc-client2007e but it is not installable
Depends: libjpeg62 (>= 6b1) but it is not installable
Depends: libmcrypt4 but it is not installable
Depends: libxmlrpc-c++8v5 but it is not installable
Depends: libxmlrpc-core-c3 but it is not installable
sw-engine-cli-2.20 : Depends: libc-client2007e but it is not installable
Depends: libjpeg62 (>= 6b1) but it is not installable
Depends: libmcrypt4 but it is not installable
Depends: libxmlrpc-c++8v5 but it is not installable
Depends: libxmlrpc-core-c3 but it is not installable
Not all packages were installed.
Please contact product technical support.
Is this still related to the configuration of my sever ?