diff --git a/src/xenialdan/MagicWE2/API.php b/src/xenialdan/MagicWE2/API.php
index b60e8e91..0c325e18 100644
--- a/src/xenialdan/MagicWE2/API.php
+++ b/src/xenialdan/MagicWE2/API.php
@@ -457,12 +457,12 @@ public static function evalAsMath(string $str)
 			$operators = ['*', '/'];
 			while (!$error && !empty($operators)) {
 				$operator = array_pop($operators);
-				while ($operator && strpos($str, $operator) !== false) {
+				while ($operator !== null && strpos($str, $operator) !== false) {
 					$regex = '/([\d\.]+)\\' . $operator . '(\-?[\d\.]+)/';
 					preg_match($regex, $str, $matches);
 					if (isset($matches[1], $matches[2])) {
-						if ($operator === '+') $result = (float)$matches[1] + (float)$matches[2];
-						if ($operator === '-') $result = (float)$matches[1] - (float)$matches[2];
+						//if ($operator === '+') $result = (float)$matches[1] + (float)$matches[2];
+						//if ($operator === '-') $result = (float)$matches[1] - (float)$matches[2];
 						if ($operator === '*') $result = (float)$matches[1] * (float)$matches[2];
 						if ($operator === '/') {
 							if ((float)$matches[2]) {
diff --git a/src/xenialdan/MagicWE2/EventListener.php b/src/xenialdan/MagicWE2/EventListener.php
index 81be5375..81c8220e 100644
--- a/src/xenialdan/MagicWE2/EventListener.php
+++ b/src/xenialdan/MagicWE2/EventListener.php
@@ -66,8 +66,9 @@ public function onSessionLoad(MWESessionLoadEvent $event): void
 		Loader::getInstance()->wailaBossBar->addPlayer($event->getPlayer());
 		if (Loader::hasScoreboard()) {
 			try {
+				if (($session = $event->getSession()) instanceof UserSession && $session->isSidebarEnabled())
 				/** @var UserSession $session */
-				if (($session = $event->getSession()) instanceof UserSession && $session->isSidebarEnabled()) $session->sidebar->handleScoreboard($session);
+				$session->sidebar->handleScoreboard($session);
 			} catch (InvalidArgumentException $e) {
 				Loader::getInstance()->getLogger()->logException($e);
 			}
diff --git a/src/xenialdan/MagicWE2/Loader.php b/src/xenialdan/MagicWE2/Loader.php
index 424ad12e..ebb9f4a5 100644
--- a/src/xenialdan/MagicWE2/Loader.php
+++ b/src/xenialdan/MagicWE2/Loader.php
@@ -322,26 +322,28 @@ public function onEnable(): void
 		#BlockStatesParser::getInstance()::runTests();
 		$world = Loader::getInstance()->getServer()->getWorldManager()->getDefaultWorld();
 		$spawn = $world->getSafeSpawn()->asVector3();
-		foreach (glob($this->getDataFolder() . 'structures' . DIRECTORY_SEPARATOR . "*.mcstructure") as $file) {
-			$this->getLogger()->debug(TextFormat::GOLD . "Loading " . basename($file));
-			try {
-				/** @var StructureStore $instance */
-				$instance = StructureStore::getInstance();
-				$structure = $instance->loadStructure(basename($file));
-				//this will dump wrong blocks for now
-				foreach ($structure->blocks() as $block) {
-					#$this->getLogger()->debug($block->getPos()->asVector3() . ' ' . BlockStatesParser::printStates(BlockStatesParser::getStateByBlock($block), false));
-					$world->setBlock(($at = $spawn->addVector($block->getPos()->asVector3())), $block);
-					if (($tile = $structure->translateBlockEntity(Position::fromObject($block->getPos()->asVector3(), $world), $at)) instanceof Tile) {
-						$tileAt = $world->getTileAt($block->getPos()->getFloorX(), $block->getPos()->getFloorY(), $block->getPos()->getFloorZ());
-						if ($tileAt !== null) $world->removeTile($tileAt);
-						$world->addTile($tile);
+		$structureFiles = glob($this->getDataFolder() . 'structures' . DIRECTORY_SEPARATOR . "*.mcstructure");
+		if($structureFiles !== false)
+			foreach ($structureFiles as $file) {
+				$this->getLogger()->debug(TextFormat::GOLD . "Loading " . basename($file));
+				try {
+					/** @var StructureStore $instance */
+					$instance = StructureStore::getInstance();
+					$structure = $instance->loadStructure(basename($file));
+					//this will dump wrong blocks for now
+					foreach ($structure->blocks() as $block) {
+						#$this->getLogger()->debug($block->getPos()->asVector3() . ' ' . BlockStatesParser::printStates(BlockStatesParser::getStateByBlock($block), false));
+						$world->setBlock(($at = $spawn->addVector($block->getPos()->asVector3())), $block);
+						if (($tile = $structure->translateBlockEntity(Position::fromObject($block->getPos()->asVector3(), $world), $at)) instanceof Tile) {
+							$tileAt = $world->getTileAt($block->getPos()->getFloorX(), $block->getPos()->getFloorY(), $block->getPos()->getFloorZ());
+							if ($tileAt !== null) $world->removeTile($tileAt);
+							$world->addTile($tile);
+						}
 					}
+				} catch (Exception $e) {
+					$this->getLogger()->debug($e->getMessage());
 				}
-			} catch (Exception $e) {
-				$this->getLogger()->debug($e->getMessage());
 			}
-		}
 
 		//register WAILA bar
 		$this->wailaBossBar = new DiverseBossBar();
diff --git a/src/xenialdan/MagicWE2/commands/ReportCommand.php b/src/xenialdan/MagicWE2/commands/ReportCommand.php
index 2ba07047..146e92d7 100644
--- a/src/xenialdan/MagicWE2/commands/ReportCommand.php
+++ b/src/xenialdan/MagicWE2/commands/ReportCommand.php
@@ -55,7 +55,7 @@ public function onRun(CommandSender $sender, string $aliasUsed, array $args): vo
 				TF::EOL . "<!-- DO NOT CHANGE MANUALLY -->" .
 				TF::EOL . "---" .
 				TF::EOL . TF::clean(implode(TF::EOL, Loader::getInfo())));
-			$url .= "&title=" . urlencode(TF::clean("[" . Loader::getInstance()->getDescription()->getVersion() . "] " . ($args["title"] ?? "")));
+			$url .= "&title=" . urlencode(TF::clean("[" . Loader::getInstance()->getDescription()->getVersion() . "] " . ((string)($args["title"] ?? ""))));
 
 			if (!$sender instanceof ConsoleCommandSender) $sender->sendMessage(Loader::PREFIX . $url);
 			Loader::getInstance()->getLogger()->alert($url);