Change encryption key

private/typo3conf/LocalConfiguration.php

@@ -149,7 +149,7 @@ return [
         ],
         'devIPmask' => '*',
         'displayErrors' => 1,
-        'encryptionKey' => 'db379ac7cd9a141040b6b9eca3fd574c0513c1200bdf1af600794d434a682b7ff170107496d1f0445d432d0e7d2a74f5',
+        'encryptionKey' => 'this.key.is.changed.on.remote.servers',
         'exceptionalErrors' => 12290,
         'sitename' => 'my.typo3.org',
         'systemLogLevel' => 0,