无法加载，报错KeyError: 'available'

[hyhxy0206]

[root@locahost tmp]# zabbix_api dev_hosts_info
zabbix_manager:[1.4.04]
Python Library Documentation: method dev_hosts_info in module main

dev_hosts_info(self) method of main.zabbix_api instance

Traceback (most recent call last):
File "/usr/bin/zabbix_api", line 2636, in
function_result = cmd(*func_args, **kwargs)
File "/usr/bin/zabbix_api", line 326, in dev_hosts_info
host_list = self._hosts_get()
File "/usr/bin/zabbix_api", line 213, in _hosts_get
host_list = self.__host_get()
File "/usr/bin/zabbix_api", line 179, in __host_get
all_host_list.append((host['hostid'],host['host'],host['name'],host['interfaces'][0]["ip"],host["available"]))
KeyError: 'available'