Fixed fatal error if system.pages.types is not an array [#2984](https://github.com/getgrav/grav/issues/2984)

CHANGELOG.md

@@ -8,6 +8,7 @@
     * Fixed deleting page with language code not removing the folder if it was the last language [#3305](https://github.com/getgrav/grav/issues/3305)
     * Fixed fatal error when using markdown links with `image://` stream [#3285](https://github.com/getgrav/grav/issues/3285)
     * Fixed `system.languages.session_store_active` not having any effect [#3269](https://github.com/getgrav/grav/issues/3269)
+    * Fixed fatal error if `system.pages.types` is not an array [#2984](https://github.com/getgrav/grav/issues/2984)
 
 # v1.7.10
 ## 04/06/2021

system/src/Grav/Common/Utils.php

@@ -1844,11 +1844,14 @@ abstract class Utils
      * Wrapper to ensure html, htm in the front of the supported page types
      *
      * @param array|null $defaults
-     * @return array|mixed
+     * @return array
      */
     public static function getSupportPageTypes(array $defaults = null)
     {
         $types = Grav::instance()['config']->get('system.pages.types', $defaults);
+        if (!is_array($types)) {
+            return [];
+        }
 
         // remove html/htm
         $types = static::arrayRemoveValue($types, ['html', 'htm']);