Currently trying to set a block using the following code: Code: $sender->sendMessage("Making Blocks! :D"); $x = $sender->x; $y = $sender->z - 1; $z = $sender->z; $pos = new Vector3($x, $y, $z); $block = 5; $level = $sender->getLevel(); $level->setBlock($pos, $block); currently getting this error: Code: [CRITICAL] Unhandled exception executing command 'blocks' in Blocks: Class FirstPlugin\Vector3 not found 20:43:13 [CRITICAL] ClassNotFoundException: "Class FirstPlugin\Vector3 not found" (EXCEPTION) in "/src/spl/BaseClassLoader" at line 122 Thanks in advance!