How can I start and stop SSH in my clickable app? I'm using Python+QML, and I want to simply execute /etc/init.d/ssh start in shell, but I get the following error:

Jul 01 12:47:53 ubuntu-phablet aa-exec[7215]: PermissionError: [Errno 13] Permission denied: '/bin/sh'

How can I give my app access to the /bin/sh? Should I give it some special apparmor permission? I tried to add "template": "unconfined" to my apparmor file, but it doesn't let me do that and dies on me during build:

Errors
------
 - security:template_valid:sshhelper.apparmor
        (NEEDS REVIEW) 'unconfined' not allowed
        http://askubuntu.com/q/671403

Here's my app code, it's just straight up Python template with simple function to call shell commands:

## ssh.py
import subprocess
def execute_shell_command(command):
    process = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    output, error = process.communicate()
    return output.decode('utf-8'), error.decode('utf-8'), process.returncode

// main.qml
import QtQuick 2.7
import Lomiri.Components 1.3
import QtQuick.Layouts 1.3
import Qt.labs.settings 1.0
import io.thp.pyotherside 1.4

MainView {
    id: root
    objectName: 'mainView'
    applicationName: 'test'
    automaticOrientation: true

    width: units.gu(45)
    height: units.gu(75)

    Page {
        anchors.fill: parent

        header: PageHeader {
            id: header
            title: i18n.tr('SSH Helper')
        }

        Label {
            anchors {
                top: header.bottom
                left: parent.left
                right: parent.right
                bottom: parent.bottom
            }
            text: i18n.tr('Check the logs!')

            verticalAlignment: Label.AlignVCenter
            horizontalAlignment: Label.AlignHCenter
        }
    }

    Python {
        id: python

        Component.onCompleted: {
            addImportPath(Qt.resolvedUrl('../src/'));

            importModule('ssh', function() {
                console.log('module imported');
                python.call('ssh.execute_shell_command', ['/etc/init.d/ssh start'], function(returnValue) {
                    console.log('the command returned ' + returnValue);
                })
            });
        }

        onError: {
            console.log('python error: ' + traceback);
        }
    }
}

@TheVancedGamer Thank you!

I want to backup my system by pulling system-data and user-data folders from the /data catalog. When I boot into recovery by pressing vol+ and powering phone on, the data directory is present but it's empty. Is there something I'm doing wrong? I'm checking the directory by plugging the phone into computer and executing adb shell.
Im on an Oneplus 5T