We are running with Horizon view 7.13.  Using linked clones.  We are experiencing issues where a pool will be set to Provisioning Disabled.  Error points to composer server.  Most times we can reboot the composer server and set the provisioning to enabled and it kicks back off.   IF we try to enable it without rebooting the compsoer (usually), it will disable again.  This can affect one pool or several pools (depending on impact).  What could be causing this?  Is there any way to monitor  the pools to get notification if the provisioning gets disabled?  Right now, if I happen to be in the Horizon admin console I may catch it, or when users start to complain because the pool is empty / not replenish(set to refresh when log out).