To display your own error pages, you must have a file named ".htaccess" in the desired webspace Place folder and insert the following content:
ErrorDocument 403 /403.html
ErrorDocument 404 /404.html
ErrorDocument 500 /500.html
The files such as 403.html stands for the Error page that you have created yourself.
Please note that the error pages should not be in a suborder named "error", as this is reserved by the system.
PHP error pages are not supported