Fix fatal error when evaluateCondition is called before the router populates current route information

Author: Netrilix

CHANGELOG.md

@@ -2,10 +2,11 @@
 
 ## v0.3.1.19
 
-- Fixed some minor error screen layout issues
+- Fix some minor error screen layout issues
 - Make User::fresh() compatible with Eloquent\Model v5.2.40+
 - Update composer require to allow for Fortress 1.x bugfixes
 - Allow database port definitions in config-userfrosting.php
+- Fix fatal error when evaluateCondition is called before the router populates current route information
 
 ## v0.3.1.18
 

userfrosting/models/auth/AccessConditionExpression.php

@@ -67,7 +67,7 @@ public function evaluateCondition($condition, $params){
         $params['self'] = $this->_app->user->export();
 
         $route = $this->_app->router()->getCurrentRoute();
-        $params['route'] = $route->getParams();
+        $params['route'] = (is_null($route) ? [] : $route->getParams());
 
         /* Traverse the parse tree, and execute all function calls as methods of class AccessCondition.
            Replace the function node with the return value of the method.