Array
(
    [message] => Call to a member function execute() on null
    [file] => /home/panahand/public_html/partner/cron.php
    [line] => 208
    [trace] => Array
        (
            [0] => Array
                (
                    [file] => /home/panahand/public_html/partner/users_bot.php
                    [line] => 460
                    [function] => scheduleExerciseRequest
                    [args] => Array
                        (
                            [0] => 
                            [1] => 7358984909
                            [2] => 4
                            [3] => 20
                        )

                )

            [1] => Array
                (
                    [file] => /home/panahand/public_html/partner/users_bot.php
                    [line] => 156
                    [function] => showNextStepMenu
                    [args] => Array
                        (
                            [0] => TelegramBot Object
                                (
                                    [botToken:TelegramBot:private] => 8236391829:AAGisu5QszI_LnkffFDkbd-Ech4OvnCJVkk
                                    [apiUrl:TelegramBot:private] => https://api.telegram.org/bot8236391829:AAGisu5QszI_LnkffFDkbd-Ech4OvnCJVkk/
                                )

                            [1] => 7358984909
                            [2] => BotHelper Object
                                (
                                    [db] => Database Object
                                        (
                                            [conn:Database:private] => PDO Object
                                                (
                                                )

                                        )

                                )

                            [3] => 7358984909
                            [4] => 3
                            [5] => Array
                                (
                                    [0] => Array
                                        (
                                            [id] => 3
                                            [level_id] => 2
                                            [title] => حال ساده
                                            [description] => 
                                            [order_num] => 1
                                            [exercise_max_time_seconds] => 30
                                            [exercise_min_time_seconds] => 3
                                            [is_active] => 1
                                            [created_at] => 2025-11-30 07:43:07
                                        )

                                    [1] => Array
                                        (
                                            [id] => 4
                                            [level_id] => 2
                                            [title] => درس دوم حال ساده تو بی
                                            [description] => 
                                            [order_num] => 2
                                            [exercise_max_time_seconds] => 30
                                            [exercise_min_time_seconds] => 3
                                            [is_active] => 1
                                            [created_at] => 2025-11-30 07:47:04
                                        )

                                )

                            [6] => 2
                        )

                )

            [2] => Array
                (
                    [file] => /home/panahand/public_html/partner/bot.php
                    [line] => 34
                    [args] => Array
                        (
                            [0] => /home/panahand/public_html/partner/users_bot.php
                        )

                    [function] => require_once
                )

        )

)