[bot-api] Rest\NoPermissionsException Uncatchable! about discordphp HOT 3 CLOSED

$channel = $guild->channels->get('name', $greetchannel);
if(!isset($channel))
{
$channel = $guild->channels->getAll('type', 'text')->first();
}
$greetmsg = $dD[$newguild]['GreetMsg'];
$greetmsg=str_replace("{user}", "<@".$new_member->id.">", $greetmsg);
$greetmsg=str_replace("{guild}", $guild->name, $greetmsg);
try
{
$channel->sendMessage($greetmsg);
} catch (DiscordRequestFailedException $e) { 
 $user = \Discord\Parts\User\User::find($guild->owner_id);
 $user->sendMessage("You have me setup to greet people. yet my permissions won't allow me to talk in your server. If you want me to work, fix this.");
}