Fatal error: Uncaught TypeError: implode(): Argument #1 ($array) must be of type array, string given in /var/www/sites/practicatest/public_html/controllers/clController.php:1387 Stack trace: #0 /var/www/sites/practicatest/public_html/controllers/clController.php(1387): implode() #1 /var/www/sites/practicatest/public_html/controllers/clController.php(943): clController->_get_cache_test() #2 /var/www/sites/practicatest/public_html/application/Bootstrap.php(54): clController->examen_teorico() #3 /var/www/sites/practicatest/public_html/index.php(52): Bootstrap::run() #4 {main} thrown in /var/www/sites/practicatest/public_html/controllers/clController.php on line 1387