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Getting below error while restarting Knox

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Getting below error while restarting Knox

Logs

Traceback (most recent call last):
File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/KNOX/package/scripts/knox_gateway.py", line 215, in <module>
KnoxGateway().execute()
File "/usr/lib/ambari-agent/lib/resource_management/libraries/script/script.py", line 351, in execute
method(env)
File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/KNOX/package/scripts/knox_gateway.py", line 152, in stop
import params
File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/KNOX/package/scripts/params.py", line 27, in <module>
from params_linux import *
File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/KNOX/package/scripts/params_linux.py", line 248, in <module>
hbase_master_host = hbase_master_hosts[0]
IndexError: list index out of range

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