Lost GUI access to BIG IP 4000

We have a new pair of Big IP 4000 with version 11.6.0.Majority of the initial configuration has been completed. We have lost access to the GUI on the standby device and it is showing as disconnected on the primary/active device group. we are able to ping the standby device. logging into the cli shows the following continuous output.

 

Sep 28 11:44:44 emerg logger: Re-starting lind

 

Sep 28 11:44:44 emerg logger: Re-starting mcpd

 

Sep 28 11:44:45 emerg logger: Re-starting lind

 

Sep 28 11:44:46 emerg logger: Re-starting mcpd

 

How can we get back the device into operational state?