Recently messages like the one below started showing up in the DTS logs.

OSSEC HIDS Notification.
2016 Sep 08 12:27:25

Received From: (dts) any->/var/log/apache2/error.log
Rule: 31412 fired (level 5) -> "PHP internal error (missing file)."
Portion of the log(s):

[Thu Sep 08 12:27:25 2016] [error] [client 141.142.60.37] PHP Warning: file_get_contents(http://dts.ncsa.illinois.edu:9000/api/extractions//status): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found\r\n in /var/www/dts/extract.php on line 29
--END OF NOTIFICATION

• file_id is missing from the request http://dts.ncsa.illinois.edu:9000/api/extractions//status

• There is a while loop in vat/www/dts/tests.py that may need to be changed.

#Poll until output is ready (optional)

        while wait > 0:

                status = requests.get('http://' + host + ':' + port + '/api/extractions/' + file_id + '/status?key=' + key).json()

                if status['Status'] == 'Done': break

                time.sleep(1)

                wait -= 1