Fatal error during Cron

Hello again,

I just noticed a fatal error that happened during the handling of WP-Cron:

Fatal error: Uncaught TypeError: array_push(): Argument #1 ($array) must be of type array, null given in /wp-content/plugins/companion-auto-update/cau_functions.php:283
Stack trace:
#0 /wp-content/plugins/companion-auto-update/cau_functions.php(283): array_push()
#1 /wp-includes/class-wp-hook.php(324): cau_run_custom_hooks_c()
#2 /wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#3 /wp-includes/plugin.php(565): WP_Hook->do_action()
#4 phar:///usr/share/php/wp-cli/wp-cli-2.9.0+infong1.1.3.phar/vendor/wp-cli/cron-command/src/Cron_Event_Command.php(361): do_action_ref_array()
#5 phar:///usr/share/php/wp-cli/wp-cli-2.9.0+infong1.1.3.phar/vendor/wp-cli/cron-command/src/Cron_Event_Command.php(284): Cron_Event_Command::run_event()
#6 [internal function]: Cron_Event_Command->run()
#7 phar:///usr/share/php/wp-cli/wp-cli-2.9.0+infong1.1.3.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Dispatcher/CommandFactory.php(100): call_user_func()
#8 [internal function]: WP_CLI\Dispatcher\CommandFactory::WP_CLI\Dispatcher\{closure}()
#9 phar:///usr/share/php/wp-cli/wp-cli-2.9.0+infong1.1.3.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Dispatcher/Subcommand.php(488): call_user_func()
#10 phar:///usr/share/php/wp-cli/wp-cli-2.9.0+infong1.1.3.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Runner.php(436): WP_CLI\Dispatcher\Subcommand->invoke()
#11 phar:///usr/share/php/wp-cli/wp-cli-2.9.0+infong1.1.3.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Runner.php(459): WP_CLI\Runner->run_command()
#12 phar:///usr/share/php/wp-cli/wp-cli-2.9.0+infong1.1.3.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Runner.php(1284): WP_CLI\Runner->run_command_and_exit()
#13 phar:///usr/share/php/wp-cli/wp-cli-2.9.0+infong1.1.3.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Bootstrap/LaunchRunner.php(28): WP_CLI\Runner->start()
#14 phar:///usr/share/php/wp-cli/wp-cli-2.9.0+infong1.1.3.phar/vendor/wp-cli/wp-cli/php/bootstrap.php(83): WP_CLI\Bootstrap\LaunchRunner->process()
#15 phar:///usr/share/php/wp-cli/wp-cli-2.9.0+infong1.1.3.phar/vendor/wp-cli/wp-cli/php/wp-cli.php(32): WP_CLI\bootstrap()
#16 phar:///usr/share/php/wp-cli/wp-cli-2.9.0+infong1.1.3.phar/php/boot-phar.php(20): include('phar:///usr/sha...')
#17 /usr/share/php/wp-cli/wp-cli-2.9.0+infong1.1.3.phar(4): include('phar:///usr/sha...')
#18 {main}
  thrown in /wp-content/plugins/companion-auto-update/cau_functions.php on line 283

Seems like the $allDates array is never initialized.