Update 2.20 -> Your Composer dependencies require a PHP version ">= 8.0.0". about cdav

[jpfox]

composer is not used to install cdav... just unzip it in your custom directory

[jpfox]

This error effectively occurs in php logs if you have not php 8 or greater. Are you sure that you run this version on your web server ?
The error message specifies your php version :

Composer detected issues in your platform: Your Composer dependencies require a PHP version ">= 8.0.0". You are running 7.2.34

[zunami]

hello!

I have already bring up to date to the 2.21 version .
and again the php 8 error

I have installed
php 7.4
php 8.0
php 8.1

[daraelmin]

Hi,

Installing PHP 8.1 is not enough. You must launch it. There can be several version of PHP on the same server (or computer), but only one can ne running at one tome. So I assume, you've just have to stop PHP 7.2.34 and Start PHP 8.1.

Cheers

[zunami]

so i have finished it now. i have version 16.0.3 with php 7.4
problem is I can not go to php 8.0 because this causes too many errors in the background.

Dolibarr release and bug information

I guess I have to wait for the dolibarr 17 until the final release with the correction to php 8.0

[jpfox]

The recent upgrade of Sabre/DAV embedded with cdav was certainly not so welcome. I think I will generate a branch dedicated to php 7.4 with the previous version of Sabre/DAV...

I will anounce it here

[zunami]

problem fixed since update to Dolibarr 17.0 and update to PHP 8.0