PHP Exceptions CodeIgniter - php

Question

my code is generating ssse following error:
Fatal error: Uncaught TypeError: Argument 1 passed to
CI_Exceptions::show_exception() must be an instance of Exception,
instance of Error given, called in
C:\xampp\htdocs\gog\lib\core\Common.php on line 662 and defined in
C:\xampp\htdocs\gog\lib\core\Exceptions.php:190 Stack trace: #0
C:\xampp\htdocs\gog\lib\core\Common.php(662):
CI_Exceptions->show_exception(Object(Error)) #1 [internal function]:
_exception_handler(Object(Error)) #2 {main} thrown in C:\xampp\htdocs\gog\lib\core\Exceptions.php on line 190
The line of the codes described is these:
function _exception_handler(Throwable $exception)
{
$_error =& load_class('Exceptions', 'core');
$_error->log_exception('error', 'Exception: '.$exception->getMessage(), $exception->getFile(), $exception->getLine());
// Should we display the error?
if (str_ireplace(array('off', 'none', 'no', 'false', 'null'), '', ini_get('display_errors')))
{
$_error->show_exception($exception); //line 662
}
exit(1); // EXIT_ERROR
}
public function show_exception(Exception $exception) //line 190
{
$templates_path = config_item('error_views_path');
if (empty($templates_path))
{
$templates_path = VIEWPATH.'errors'.DIRECTORY_SEPARATOR;
}
$message = $exception->getMessage();
if (empty($message))
{
$message = '(null)';
}
if (is_cli())
{
$templates_path .= 'cli'.DIRECTORY_SEPARATOR;
}
else
{
set_status_header(500);
$templates_path .= 'html'.DIRECTORY_SEPARATOR;
}
if (ob_get_level() > $this->ob_level + 1)
{
ob_end_flush();
}
ob_start();
include($templates_path.'error_exception.php');
$buffer = ob_get_contents();
ob_end_clean();
echo $buffer;
}
Someone can pinpoint my problem ?

Answer 1

No CodeIgniter version has that _exception_handler() signature. This is what happens when you modify stock framework files.
Download a fresh copy of the latest CodeIgniter and replace yours with it.

Answer 2

You call show_exception(Exception $exception) from within _exception_handler(Throwable $exception). Since the former takes an Exception as argument, you cannot give it a Throwable, as you do in line 662. Exception implements the Throwable interface, but that does not guarantee all Throwables to be Exceptions (e. g. they could be of type Error).
Replace _exception_handler(Throwable $exception) with _exception_handler(Exception $exception), or change show_exception(Exception $exception) to show_exception(Throwable $exception), and change the method bodies accordingly if needed.