Fixed fatal error in multi-site setups

CHANGELOG.md

@@ -22,8 +22,9 @@
     * Fixed error on missing `Flex` templates in if `Flex Objects` plugin isn't installed
     * Fixed `PageTranslateTrait::getAllLanguages()` and `getAllLanguages()` to include default language
     * Fixed multi-language saving issues with default language in `Flex Pages`
-    * Grav 1.7: Fixed PHP 7.1 compatibility issues
     * Selfupgrade CLI: Fixed broken selfupgrade assets reference [#2681](https://github.com/getgrav/grav/issues/2681)
+    * Grav 1.7: Fixed PHP 7.1 compatibility issues
+    * Grav 1.7: Fixed fatal error in multi-site setups
 
 # v1.7.0-beta.10
 ## 10/03/2019

system/src/Grav/Common/Page/Pages.php

@@ -99,11 +99,6 @@ class Pages
     public function __construct(Grav $grav)
     {
         $this->grav = $grav;
-
-        $type = $grav['config']->get('system.pages.type');
-        if ($type === 'flex') {
-            $this->initFlexPages();
-        }
     }
 
     /**
@@ -122,7 +117,7 @@ class Pages
         if (!$this->enable_pages) {
             $this->enable_pages = true;
 
-            $this->buildPages();
+            $this->init();
         }
     }
 
@@ -247,6 +242,15 @@ class Pages
         $this->check_method = strtolower($method);
     }
 
+    public function register(): void
+    {
+        $config = $this->grav['config'];
+        $type = $config->get('system.pages.type');
+        if ($type === 'flex') {
+            $this->initFlexPages();
+        }
+    }
+
     /**
      * Class initialization. Must be called before using this class.
      */
@@ -256,6 +260,8 @@ class Pages
             return;
         }
 
+        $this->initialized = true;
+
         $config = $this->grav['config'];
         $this->ignore_files = $config->get('system.pages.ignore_files');
         $this->ignore_folders = $config->get('system.pages.ignore_folders');

system/src/Grav/Common/Processors/InitializeProcessor.php

@@ -11,6 +11,7 @@ namespace Grav\Common\Processors;
 
 use Grav\Common\Config\Config;
 use Grav\Common\Debugger;
+use Grav\Common\Page\Pages;
 use Grav\Common\Uri;
 use Grav\Common\Utils;
 use Grav\Framework\Psr7\Response;
@@ -137,6 +138,10 @@ class InitializeProcessor extends ProcessorBase
             date_default_timezone_set($timezone);
         }
 
+        /** @var Pages $pages */
+        $pages = $this->container['pages'];
+        $pages->register();
+
         /** @var Uri $uri */
         $uri = $this->container['uri'];
         $uri->init();