What causes "{elementName} '{element}' does not exist in the {suffix}" in phalcon/cphalcon?

Catch the exception, disconnect(), and reconnect+retry the operation — the stream may be out of sync after a timeout.

phalcon/cphalcon · error · Phalcon\Acl\Exceptions\ElementNotFound

{elementName} '{element}' does not exist in the {suffix}

Error message

{elementName} '{element}' does not exist in the {suffix}

What it means

During a length-prefixed read on the beanstalk socket, BeanstalkConnection checks stream_get_meta_data(connection)['timed_out']; if the socket read timed out, it throws Exception('Connection timed out'). The TCP connection is alive but beanstalkd did not deliver the expected bytes in time — a hung server, network stall, or an idle reserve-style wait exceeding the socket timeout.

Source

Thrown at phalcon/Acl/Adapter/Memory.zep:950

        return false;
    }

    /**
     * @param array  $collection
     * @param string $element
     * @param string $elementName
     * @param string $suffix
     *
     * @throws ElementNotFound
     */
    private function checkExists(
        array collection,
        string element,
        string elementName,
        string suffix = "ACL"
    ) -> void {
        if (true !== isset(collection[element])) {
            throw new ElementNotFound(
                elementName . " '" . element .
                "' does not exist in the " . suffix
            );
        }
    }

    /**
     * Invokes a callable rule, binding the role/component/user objects to the
     * closure parameters by type and enforcing its arity.
     */
    private function invokeRule(
        var funcAccess,
        int haveAccess,
        var parameters,
        var roleObject,
        var componentObject,
        string roleName,
        string componentName,

View on GitHub (pinned to b7419de9cd)

Solutions

Catch the exception, disconnect(), and reconnect+retry the operation — the stream may be out of sync after a timeout.
Check beanstalkd health and load (stats command, CPU, ready-set size) and restart it if wedged.
Verify network stability/latency between the app host and the queue host.
Never share one connection across forked processes; give each worker its own connection.

Example fix

// before
$status = $connection->reserveJob(10); // may throw 'Connection timed out'

// after
try {
    $job = $connection->reserveJob(10);
} catch (\Phalcon\Queue\Exceptions\Exception $e) {
    if ($e->getMessage() === 'Connection timed out') {
        $connection->disconnect();
        $connection->connect();
        $job = $connection->reserveJob(10); // one guarded retry
    } else {
        throw $e;
    }
}

Defensive patterns

Strategy: retry

Try / catch

try {
    $job = $connection->reserveJob($timeout);
} catch (\Phalcon\Queue\Exceptions\Exception $e) {
    if ($e->getMessage() === 'Connection timed out') {
        $connection->disconnect();   // stream may be desynced
        $connection->connect();      // reconnect...
        $job = $connection->reserveJob($timeout); // ...and retry once
    } else {
        throw $e;
    }
}

Prevention

Always reconnect after a socket timeout — never continue reading the same stream.
Give each forked worker its own connection; never share socket resources across processes.
Monitor beanstalkd load and network latency between app and queue hosts.

When it happens

Trigger: Reading a job body or status line when beanstalkd stalls mid-response; long reserve-with-timeout waits on a lagging or overloaded server; mobile/unstable networks between app and queue host; the socket being shared after a fork.

Common situations: Beanstalkd under heavy load or wedged; network packet loss between app and queue; workers that fork children reusing the same connection resource; timeouts surfaced during deploy/network maintenance.

Related errors

AI-assisted analysis of phalcon/cphalcon@b7419de9cd (2026-08-21). Data as JSON: /api/errors/2e31ba9ac3117932. Report an issue: GitHub.