Fatal error: During inheritance of IteratorAggregate: Uncaught ArgumentCountError: Too few arguments to function default_error_handler(), 4 passed in C:\xampp\htdocs\italk\iLearn\lib\navigationlib.php on line 897 and exactly 5 expected in C:\xampp\htdocs\italk\iLearn\lib\setuplib.php:425 Stack trace: #0 C:\xampp\htdocs\italk\iLearn\lib\navigationlib.php(897): default_error_handler(8192, 'Return type of ...', 'C:\\xampp\\htdocs...', 1142) #1 C:\xampp\htdocs\italk\iLearn\lib\setup.php(604): require_once('C:\\xampp\\htdocs...') #2 C:\xampp\htdocs\italk\iLearn\config.php(27): require_once('C:\\xampp\\htdocs...') #3 C:\xampp\htdocs\italk\iLearn\pluginfile.php(32): require_once('C:\\xampp\\htdocs...') #4 {main} in C:\xampp\htdocs\italk\iLearn\lib\navigationlib.php on line 897