[BUGFIX] Fixed Exceptions due to route null value.

src/Pecee/SimpleRouter/RouterBase.php

@@ -253,7 +253,7 @@ class RouterBase {
             throw new \InvalidArgumentException('Invalid type for getParams. Must be array or null');
         }
 
-        if($controller === null && $parameters === null) {
+        if($controller === null && $parameters === null && $this->loadedRoute !== null) {
             return $this->processUrl($this->loadedRoute, null, $getParams);
         }
 
@@ -295,7 +295,7 @@ class RouterBase {
                 $method = $tmp[1];
             }
 
-            if($controller === $c) {
+            if($controller === $c && $route !== null) {
                 return $this->processUrl($route, $method, $parameters, $getParams);
             }
         }