Uncaught ReflectionException: Class "Deployer\Deployer" does not exist

[vesnindev]

Hi. After update php cli from 7.4 to 8.1 I will get error:

PHP Fatal error: Uncaught ReflectionException: Class "Deployer\Deployer" does not exist in phar:///usr/local/bin/dep/bin/dep:119 Stack trace: #0 phar:///usr/local/bin/dep/bin/dep(119): ReflectionMethod->__construct() #1 /usr/local/bin/dep(4): require('...') #2 {main} thrown in phar:///usr/local/bin/dep/bin/dep on line 119

Also I try to reinstall deployer from https://deployer.org/download

but I also get error

Also If I try install Deployer via composer: composer require deployer/deployer --dev

I get error:

Problem 1 - deployer/deployer[v4.3.0, ..., 4.x-dev] require monolog/monolog ^1.21 -> found monolog/monolog[1.21.0, ..., 1.x-dev] but it conflicts with your root composer.json require (^2.0). - Root composer.json requires deployer/deployer ^4.3 -> satisfiable by deployer/deployer[v4.3.0, ..., 4.x-dev].
Laravel 9, PHP 8.1, Minimal monolog version for Laravel 9 is "monolog/monolog": "^2.0"