fix: composer json error; better default usage

composer.json

@@ -27,7 +27,8 @@
     "quiqqer\/translator": "1.*|dev-master|dev-dev",
     "quiqqer\/employee": "1.*|dev-master|dev-dev",
     "quiqqer\/customer": "1.*|dev-master|dev-dev",
-    "quiqqer/qui-php": "1.*|dev-master|dev-dev"
+    "quiqqer/qui-php": "1.*|dev-master|dev-dev",
+    "quiqqer/smarty3": ""
   },
   "autoload": {
     "psr-4": {

src/QUI/ERP/Debug.php

@@ -29,7 +29,7 @@ class Debug
     /**
      * @var int
      */
-    protected $debug;
+    protected $debug = false;
 
     /**
      * @return Debug
@@ -48,8 +48,15 @@ public static function getInstance()
      */
     public function __construct()
     {
-        $this->Config = QUI::getPackage('quiqqer/erp')->getConfig();
-        $this->debug  = (int)$this->Config->getValue('general', 'debug');
+        try {
+            $this->Config = QUI::getPackage('quiqqer/erp')->getConfig();
+
+            if ($this->Config) {
+                $this->debug = (int)$this->Config->getValue('general', 'debug');
+            }
+        } catch (QUI\Exception $Exception) {
+            Log::writeException($Exception);
+        }
     }
 
     /**

src/QUI/ERP/Defaults.php

@@ -85,8 +85,13 @@ public static function getBruttoNettoStatus()
     public static function getPrecision()
     {
         try {
-            $Package   = QUI::getPackage('quiqqer/erp');
-            $Config    = $Package->getConfig();
+            $Package = QUI::getPackage('quiqqer/erp');
+            $Config  = $Package->getConfig();
+
+            if (!$Config) {
+                return 8;
+            }
+
             $precision = $Config->get('general', 'precision');
 
             if ($precision) {