Post reload scripts fail reloads due to bug in Reload.class.php

When post-reload script is defined, reload fails with

PHP Fatal error:  Call to a member function delete() on null in /var/www/html/admin/libraries/Console/Reload.class.php on line 848
PHP Stack trace:
PHP   1. {main}() /var/lib/asterisk/bin/fwconsole:0
PHP   2. Symfony\Component\Console\Application->run() /var/lib/asterisk/bin/fwconsole:163
PHP   3. Symfony\Component\Console\Application->doRun() /var/www/html/admin/libraries/Composer/vendor/symfony/console/Application.php:148
PHP   4. Symfony\Component\Console\Application->doRunCommand() /var/www/html/admin/libraries/Composer/vendor/symfony/console/Application.php:255
PHP   5. Symfony\Component\Console\Command\Command->run() /var/www/html/admin/libraries/Composer/vendor/symfony/console/Application.php:960
PHP   6. FreePBX\Console\Command\Reload->execute() /var/www/html/admin/libraries/Composer/vendor/symfony/console/Command/Command.php:255
PHP   7. FreePBX\Console\Command\Reload->reload() /var/www/html/admin/libraries/Console/Reload.class.php:90
PHP   8. FreePBX\Console\Command\Reload->runPostReloadScript() /var/www/html/admin/libraries/Console/Reload.class.php:461
Whoops\Exception\ErrorException: Call to a member function delete() on null in file /var/www/html/admin/libraries/Console/Reload.class.php on line 848

Traced to be a bug in runPostReloadScript() in Reload.class.php,

$notify->add_error and $notify->delete calls there use undefined $notify variable which is not defined, obtained or passed from anywhere.