Section fails to open in the interface

Description

The menu section, such as Virtual Servers, fails to open. When trying to open the section in the interface, the error "with <module name> does not exist" appears.

Solution

Package installation

To solve the problem, install the required package:

Connect to the server with the platform via SSH.
Install the package:
CentOS, AlmaLinux
```
yum install <pkg_name>
```
Ubuntu, Astra Linux
```
apt install <pkg_name> 
```
Comment
<pkg_name> — package name

Package names

In most cases, packages are named billmanager-plugin-<module name>. Use the value <module_name> from the error in the interface.

To check the package names:

Connect to the server with the platform via SSH.
Run the command:
CentOS, AlmaLinux
```
rpm -qa
```
Ubuntu, Astra Linux
```
dpkg -l
```

If the above steps did not help to open the section, contact ISPsystem technical support. We will be glad to help you.