Fatal error: Uncaught TypeError: Return value of Modules\Statistic\Mappers\Statistic::columnWithValueExists() must be of the type bool, null returned in C:\inetpub\wwwroot\application\modules\statistic\mappers\Statistic.php:966 Stack trace: #0 C:\inetpub\wwwroot\application\modules\statistic\mappers\Statistic.php(937): Modules\Statistic\Mappers\Statistic->columnWithValueExists() #1 C:\inetpub\wwwroot\application\modules\statistic\controllers\Index.php(87): Modules\Statistic\Mappers\Statistic->browserSeenBefore() #2 C:\inetpub\wwwroot\application\libraries\Ilch\Page.php(241): Modules\Statistic\Controllers\Index->showAction() #3 C:\inetpub\wwwroot\application\libraries\Ilch\Page.php(135): Ilch\Page->loadController() #4 C:\inetpub\wwwroot\index.php(67): Ilch\Page->loadPage() #5 {main} thrown in C:\inetpub\wwwroot\application\modules\statistic\mappers\Statistic.php on line 966