Fixed potential error when upgrading Grav

CHANGELOG.md

@@ -1,3 +1,9 @@
+# v1.7.0-rc.20
+## mm/dd/2020
+
+1. [](#bugfix)
+    * Fixed potential error when upgrading Grav
+
 # v1.7.0-rc.19
 ## 12/02/2020
 

system/src/Grav/Installer/VersionUpdater.php

@@ -110,6 +110,8 @@ final class VersionUpdater
 
     protected function loadUpdates(): void
     {
+        $this->updates = [];
+
         $schema = $this->getExtensionSchema();
         $iterator = new DirectoryIterator($this->path);
         foreach ($iterator as $item) {