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Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /var/www/tracker/mod/training.php:346 Stack trace: #0 /var/www/tracker/mod/module.php(52): require_once() #1 /var/www/tracker/index.php(136): loadModule() #2 {main} thrown in /var/www/tracker/mod/training.php on line 346