Snapshots have been taken for some FxM reports and they were working fine until on a certain day when every snapshots won't be listed and even for the new created ones.
The following errors could be seen from http error log.
[Wed Mar 25 08:18:08.931265 2015] [:error] [pid 11649:tid 1291950400] [client 10.xxx.xxx.xxx:48231] PHP Fatal error: Call to undefined method AlertsResponse::getField() in /home/www/public_html/classes/baseresp.php on line 151, referer: https://FxM-hostname/comptree.php
To fix the issue, you need to remove the problematic snapshot xml file. Please go to FxM shell ( SOL17335 ) and run following commands.