Device seems to be in the inoperable state.
0 50 yes 3 no myself none 9693312(inoperable) 01:46:05
Can you please get the below details from both the devices, not only one:
get nesrp
get nsrp monitor (also included in 'get nsrp' output)
get nsrp monitor interface
get nsrp monitor zone
get config | include nsrp
Check the 'get event' for 01:46:05 hours before if there is any details why it went to inoperable state.
https://kb.juniper.net/InfoCenter/index?page=content&id=KB11451&actp=METADATA
Thanks,
Vikas