local variable 'node' referenced before assignment

[itJunky]

When i run this script by hand i getting error. How can i fix it?
root@elastic1 ~ # sudo -u zabbix /etc/zabbix/scripts/elasticsearch.py status
Traceback (most recent call last):
File "/etc/zabbix/scripts/elasticsearch.py", line 116, in
main()
File "/etc/zabbix/scripts/elasticsearch.py", line 93, in main
out += getKeys(node,traps2) #getting stats values
UnboundLocalError: local variable 'node' referenced before assignment

[itJunky]

After update a script to latest version, error changed to "Unable to load JSON data!"

[itJunky]

Why you doesn't use a url 'localhost:9200/_cat/nodes?v' for getting node list?
'_nodes/_local/stats?all=true' get unparseble long output about cluster and doesn't have a list of nodes.

[itJunky]

After rename a node names from ip to domain, i can getting output without errors