Services Management menu in Plesk returns error: Call to a member function getWebServerPackage() on a non-object

Plesk for Linux kb: technical ABT: Group B

Applicable to:

When accessing Tools & Settings > Services Management in Plesk, the below error is displayed:

PLESK_INFO: ERROR: Call to a member function getWebServerPackage() on a non-object (class.ServiceControl.php:76)
Reconfiguring Apache fails with this error:

CONFIG_TEXT: PHP Fatal error: Call to a member function getScheme() on a non-object in /usr/local/psa/admin/plib/WebServerManager/Adapter/Apache.php on line 800

Empty ServiceNodeEnvironment value due to database inconsistency:

MYSQL_LIN: select * from ServiceNodeEnvironment where name='httpd';
Empty set (0.00 sec)

For CentOS/RHEL

Connect to the server using SSH.
Create Plesk database backup.

# MYSQL_PWD=cat /etc/psa/.psa.shadow mysqldump -u admin psa > psadate +%F_%H.%M.sql
Delete record from psa database to avoid duplicate entries:

# MYSQL_PWD=`cat /etc/psa/.psa.shadow` mysql -u admin psa -e"delete from ServiceNodeEnvironment where name='httpd';"
Insert record as below:

# MYSQL_PWD=`cat /etc/psa/.psa.shadow` mysql -u admin psa -e"insert into ServiceNodeEnvironment values(1,'componentsPackages','httpd','`rpm -q --qf "%{VERSION}.%{RELEASE}\" httpd`')"

For Debian/Ubuntu

Connect to the server using SSH.
Create Plesk database backup.

# MYSQL_PWD=cat /etc/psa/.psa.shadow mysqldump -u admin psa > psadate +%F_%H.%M.sql
Delete record from psa database to avoid duplicate entries:

# MYSQL_PWD=`cat /etc/psa/.psa.shadow` mysql -u admin psa -e"delete from ServiceNodeEnvironment where name='httpd';"
Insert record as below:

# MYSQL_PWD=`cat /etc/psa/.psa.shadow` mysql -u admin psa -e"insert into ServiceNodeEnvironment values(1,'componentsPackages','httpd','`dpkg-query -W -f='${Version} ${Release}\' apache2`')"

Alternative steps:

Execute the following command in order to know the apache version and release:

# dpkg-query -W -f='${Version} ${Release}' apache2
2.4.10-1ubuntu1.1~ubuntu14.04.2
Insert the version and release to the database:

# MYSQL_PWD=`cat /etc/psa/.psa.shadow` mysql -u admin psa -e"insert into ServiceNodeEnvironment values(1,'componentsPackages','httpd','2.4.10-1ubuntu1.1~ubuntu14.04.2');"