Pydio Ajaxplorer Error: array_key_exists() expects parameter 2 to be array, null given

Error Message:

Pydio Didn’t work properly. While browsing the URL in Firefox / Chrome, following error message printed.

<?xml version=”1.0″ encoding=”UTF-8″?>
-<tree><message type=”ERROR”>array_key_exists() expects parameter 2 to be array, null given</message></tree>

Solution:

Clear the Cache files from the following locations and restart the Web/ Apache server.

#rm -rf data/cache/i18n/*.ser
#rm -rf  data/cache/plugins_*.ser