It is a duplicate issue of this question
I have followed the instruction, but id did not solved the issue.
I have installed php8.0, php-xml, php8.0-xml and composer (using install script), then ran composer install successfuly.
On my webapp's root, there is a HTTP 500 error: Undefined constant "XML_PI_NODE"
You can see more log at http://1ib.re
I am on a Debian 10 Buster server.
Thank you for your help \o