Composer stopped working, I don’t understand how this happened?

Question

PHP

Ubuntu 18.04 Composer stopped working after connecting xdebug. For a long time I wanted to try to install xdebug, but apparently not fate)) I installed it using the xdebug wizard. Now after the command composer update writes

Problem 1
    - Installation request for slim/http ^0.8.0 -> satisfiable by slim/http[0.8].
    - slim/http 0.8 requires ext-simplexml * -> the requested PHP extension simplexml is missing from your system.

and phpcs began to complain about something ...
tell me how to fix it?

Answer 1

the error speaks for itself: the simplexml extension for php is not installed.

Answer 2

Damn, I didn’t notice that after connecting, everything switched to php7.4, it was 7.2, so it swears ... but I think where it went ..