catches exception in nxos_command and returns failed message (#22151)

Catches exception in Conditional check and returns appropriated failed
message

lib/ansible/modules/network/nxos/nxos_command.py

@@ -161,7 +161,7 @@ from ansible.module_utils.nxos import run_commands
 from ansible.module_utils.pycompat24 import get_exception
 from ansible.module_utils.basic import AnsibleModule
 from ansible.module_utils.six import string_types
-from ansible.module_utils.netcli import Conditional
+from ansible.module_utils.netcli import Conditional, FailedConditionalError
 from ansible.module_utils.network_common import ComplexList
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 
@@ -241,11 +241,15 @@ def main():
         responses = run_commands(module, commands)
 
         for item in list(conditionals):
+            try:
                 if item(responses):
                     if match == 'any':
                         conditionals = list()
                         break
                     conditionals.remove(item)
+            except FailedConditionalError:
+                exc = get_exception()
+                module.fail_json(msg=str(exc))
 
         if not conditionals:
             break