Error 2

[18:55:02] [Server thread/CRITICAL]: ErrorException: "Undefined index: Commands" (EXCEPTION) in "plugins/SEXDCore_SB/src/xinghao2003/SEXDCore/Main" at line 44


public function onEnable() : void{
$this->getServer()->getPluginManager()->registerEvents($this, $this);
#############################
$this->saveDefaultConfig();
$c = $this->getConfig()->getAll();
foreach ($c["Commands"] as $i) { <== here error
$this->getScheduler()->scheduleRepeatingTask(new TimeCommand($this, $i["Command"]), $i["Time"] * 1200);
#############################
$this->saveItems();
#############################
$this->g1 = new Config($this->getDataFolder()."1.yml",Config::YAML,[]);
$this->g2 = new Config($this->getDataFolder()."2.yml",Config::YAML,[]);
$this->g3 = new Config($this->getDataFolder()."3.yml",Config::YAML,[]);
$this->g4 = new Config($this->getDataFolder()."4.yml",Config::YAML,[]);
#############################
$this->saveResource("serverui.json");
$this->conf = new Config($this->getDataFolder()."prefix.yml",Config::YAML,[]);
#############################



$this->getLogger()->info("SEXDCore Enable");
}