PHP warning Trying to access array offset on value of type null on schedule cron task

[haietza]

Warning: Trying to access array offset on value of type null in /var/www/html/blocks/acclaim/lib.php on line 138

Call Stack:
0.0007 355376 1. {main}() /var/www/html/admin/cli/cron.php:0
0.3449 2979496 2. core\cron::run_main_process($keepalive = NULL) /var/www/html/admin/cli/cron.php:186
0.4596 3351296 3. core\cron::run_scheduled_tasks($startruntime = 1716295803, $startprocesstime = 1716295803) /var/www/html/lib/classes/cron.php:125
2.1190 7317688 4. core\cron::run_inner_scheduled_task($task = class block_acclaim\task\issue_badges { private ${core\task\task_base}lock = class core\lock\lock { protected $key = '0ed20b52c8c84160b686912599e542aea57d75ce'; protected $factory = class core\lock\mysql_lock_factory { ... }; protected $released = FALSE; protected $caller = '/var/www/html/lib/classes/task/manager.php on line 1039' }; private ${core\task\task_base}cronlock = NULL; private ${core\task\task_base}component = 'block_acclaim'; private ${core\task\task_base}blocking = FALSE; private ${core\task\task_base}faildelay = '0'; private ${core\task\task_base}nextruntime = '1716295800'; private ${core\task\task_base}timestarted = 1716295804; private ${core\task\task_base}hostname = 'asulearn.appstate.edu'; private ${core\task\task_base}pid = 2420320; private ${core\task\scheduled_task}hour = ''; private ${core\task\scheduled_task}minute = '/5'; private ${core\task\scheduled_task}day = ''; private ${core\task\scheduled_task}month = ''; private ${core\task\scheduled_task}dayofweek = '*'; private ${core\task\scheduled_task}lastruntime = '1716295504'; private ${core\task\scheduled_task}customised = '0'; private ${core\task\scheduled_task}overridden = FALSE; private ${core\task\scheduled_task}disabled = FALSE }) /var/www/html/lib/classes/cron.php:208
2.1260 7331504 5. block_acclaim\task\issue_badges->execute() /var/www/html/lib/classes/cron.php:405
2.1296 7334544 6. block_acclaim_lib->issue_pending_badges($curl = class curl { public $cache = FALSE; public $proxy = FALSE; public $version = '0.4 dev'; public $response = []; public $rawresponse = []; public $header = []; public $info = NULL; public $error = NULL; public $errno = NULL; public $emulateredirects = TRUE; private $options = ['CURLOPT_USERAGENT' => 'MoodleBot/4.3 (+https://ltsdev05.its.appstate.edu/moodle/4.3)', 'CURLOPT_HEADER' => 0, 'CURLOPT_NOBODY' => 0, 'CURLOPT_FOLLOWLOCATION' => 1, 'CURLOPT_MAXREDIRS' => 10, 'CURLOPT_ENCODING' => '', 'CURLOPT_RETURNTRANSFER' => 1, 'CURLOPT_SSL_VERIFYPEER' => 0, 'CURLOPT_SSL_VERIFYHOST' => 2, 'CURLOPT_CONNECTTIMEOUT' => 30]; private $proxy_host = ''; private $proxy_auth = ''; private $proxy_type = ''; private $debug = FALSE; private $cookie = FALSE; private $responsefinished = FALSE; private $securityhelper = class core\files\curl_security_helper { protected $transportschemes = [...] }; private $ignoresecurity = FALSE; public $_tmp_file_post_params = [] }) /var/www/html/blocks/acclaim/classes/task/issue_badges.php:50