I am not sure if this is the same cause as this ticket, but a similar situation occurred with the following code.<br>

<?php

for ($i = 0; $i < 10; $i++) {
    // "ERR: Time-out connecting to debugging client" is logged 11 times at finish of php.
    $hoge[] = new class($i) {
        public $id = 0;
        public function __construct(int $i) {
            $this->id = $i;
        }
        public function __destruct() {
            echo __METHOD__ .  ' : ' .  $this->id . '<br>' . PHP_EOL;
            unset($this->id);
        }
    };
}

// If uncommented out, "ERR: Time-out connecting to debugging client" is logged only once, as usual.
// $hoge = null;
?>

<pre>
[xdebug]
xdebug.mode = develop,debug
xdebug.idekey = "PHPSTORM"
xdebug.client_host=*******
xdebug.client_port=9003
xdebug.start_with_request=yes
xdebug.start_upon_error=no
xdebug.log=/var/log/httpd/xdebug_log


Copyright (c) The PHP Group
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    with Zend OPcache v8.1.11, Copyright (c), by Zend Technologies
    with Xdebug v3.1.5, Copyright (c) 2002-2022, by Derick Rethan
</pre>