Invalid function arguments provided. client->loopForever()

[lifamomo]

call this function client->loopForever() ， Often appear Invalid function arguments provided
below is the code I wrote:

public function send($msg){
try {
$mid = 0;
$mqttclient = new \Mosquitto\Client;
$gateway_topic = $this->topic;
$mqttclient->onConnect(function() use ($mqttclient, $gateway_topic,&$mid,$msg)
{
$mid = $mqttclient->publish($gateway_topic,$msg,$this->qos,1);
$mqttclient->disconnect();
});
$mqttclient->setCredentials($this->username, $this->password);
$mqttclient->connect($this->server, $this->port, 5);
$mqttclient->loopforever();
} catch (Exception $e) {
writeException($e);
}
echo "success";
}

please help, thank you!

[w297088867]

Fatal error: Uncaught Mosquitto\Exception: Invalid function arguments provided. : Mosquitto\Client->loop(100) .
A mistake similar to yours!!!!
help,help,help.

[creazy412]

@w297088867 @lifamomo
Hey, have you solved the problem?

[creazy412]

https://sources.debian.org/src/mosquitto/1.4.10-3+deb9u4/lib/mosquitto.c/
Line 990
But I don't see why null-pointer error

[neumantm]

I have the same problem. Did anyone find the cause?