سلام . چند روز هست که در بخش مدیریت سایت این پیام رو می بینم

Your PHP version, 7.2.33, is only receiving security fixes from the PHP project at this time. This means your PHP version will soon no longer be supported. We recommend planning to upgrade to a newer PHP version before it reaches end of support on 2020-11-30. Joomla will be faster and more secure if you upgrade to a newer PHP version. Please contact your host for upgrade instructions.

وقتی هاست رو به PHP 7.3 ارتقا میدم دیگه سایت بالا نمیاد و پیام زیر روی صفحه میاد

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.

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