Error:

Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - pusher/pusher-php-server[3.0.0, ..., v3.3.1] require php ^5.4 || ^7.0 -> your php version (8.2.12) does not satisfy that requirement.
    - pusher/pusher-php-server v3.4.0 requires php >=5.4 <7.3 -> your php version (8.2.12) does not satisfy that requirement.
    - pusher/pusher-php-server v3.4.1 requires php >=5.4 <7.4 -> your php version (8.2.12) does not satisfy that requirement.
    - Root composer.json requires pusher/pusher-php-server ~3.0 -> satisfiable by pusher/pusher-php-server[3.0.0, ..., v3.4.1].

Solution:

The error you’re encountering is due to the fact that the version of the pusher/pusher-php-server package you’re trying to install requires a PHP version that is older than the one you currently have (PHP 8.2.12). Specifically, the versions of pusher/pusher-php-server listed are only compatible with PHP 7.x or earlier.

Solution: Update the Package Version

To resolve this issue, you should update the pusher/pusher-php-server package to a version that is compatible with PHP 8.x.

1. Update the composer.json File:Replace the pusher/pusher-php-server version constraint with a version that supports PHP 8.1+. The latest versions of this package do support PHP 8.x.Update the composer.json file as follows:

"require": {
    "php": "^8.1",
    "anhskohbo/no-captcha": "^2.3",
    "laravel/framework": "^10.10",
    "laravel/tinker": "~1.0",
    "michelf/php-markdown": "^1.7",
    "nicolaslopezj/searchable": "1.*",
    "pusher/pusher-php-server": "^7.0"  // Update this line
},

Run Composer Update:

After updating composer.json, run the following command:

composer update

This will update the pusher/pusher-php-server package to a version that is compatible with your current PHP version.