Merge branch 'develop' into 1.10

# Conflicts:
#	CHANGELOG.md
#	blueprints.yaml

CHANGELOG.md

@@ -1,5 +1,5 @@
 # v1.10.0-rc.2
-## mm/dd/2019
+## 12/04/2019
 
 1. [](#new)
     * Added support for hiding parts of admin by `Deny` permissions (`Flex Users` only) 
@@ -128,6 +128,12 @@
 1. [](#bugfix)
     * Fixed admin caching issues    
 
+# v1.9.12
+## 12/04/2019
+
+1. [](#bugfix)
+    * Fixed saving configuration in PHP 7.4
+
 # v1.9.11
 ## 11/06/2019
 

classes/plugin/AdminBaseController.php

@@ -734,8 +734,8 @@ class AdminBaseController
         // Process previously uploaded files for the current URI
         // and finally store them. Everything else will get discarded
         $queue = $this->admin->session()->getFlashObject('files-upload');
-        $queue = $queue[base64_encode($this->grav['uri']->url())];
         if (is_array($queue)) {
+            $queue = $queue[base64_encode($this->grav['uri']->url())];
             foreach ($queue as $key => $files) {
                 foreach ($files as $destination => $file) {
                     if (!rename($file['tmp_name'], $destination)) {