error message: 'NoneType' object has no attribute '__getitem__'

need a help....its urgent..

"{0}. Error was: {1}.".format(repr(msg), e))

ATReceiveFailure_Init: Problem json decoding message '{"status": null, "content": {"special_environment": null}, "error_type": null, "error_message": null, "exec_stack": null}'. Error was: None is not a valid status.

2017-05-05 19:22:06.342 admintools/10757:0x7f810b380740 [ATMain.main] --------------------------------
2017-05-05 19:22:06.342 admintools/10757:0x7f810b380740 [ATMain.main] raisedError
2017-05-05 19:22:06.342 admintools/10757:0x7f810b380740 [ATMain.main] runApp call was:(dbadmin, False, False)
2017-05-05 19:22:06.343 admintools/10757:0x7f810b380740 [ATMain.main] Traceback (most recent call last):
File "/opt/vertica/oss/python/lib/python2.7/site-packages/vertica/tools/ATMain.py", line 507, in main
exit_code = runApp(userName, nonInteractive, makeUniquePorts)
File "/opt/vertica/oss/python/lib/python2.7/site-packages/vertica/tools/ATMain.py", line 389, in runApp
ac.runApp()
File "/opt/vertica/oss/python/lib/python2.7/site-packages/vertica/ui/adminCtrl.py", line 3183, in runApp
self.ui.runFromNavigation("main")
File "/opt/vertica/oss/python/lib/python2.7/site-packages/vertica/ui/uiMgr.py", line 165, in a_wrapper_accepting_args
fn(self, *args, **kwargs)
File "/opt/vertica/oss/python/lib/python2.7/site-packages/vertica/ui/uiMgr.py", line 454, in runFromNavigation
self.__navigator.navigate(uimanager=self, startingPoint=runFrom)
File "/opt/vertica/oss/python/lib/python2.7/site-packages/vertica/ui/Navigator.py", line 347, in navigate
((self.__menus[ nextMenu ][ self.NAV_MACTIONS ])[ offset ])()
File "/opt/vertica/oss/python/lib/python2.7/site-packages/vertica/ui/adminCtrl.py", line 803, in dbStart
result, theMessage = self.__exec.dbStart(dbtostart, DBpassword=DBpassword)
File "/opt/vertica/oss/python/lib/python2.7/site-packages/vertica/engine/adminExec.py", line 836, in dbStart
log=r.content["db_log_path"]))
TypeError: 'NoneType' object has no attribute '__getitem'

This is error log for admintools.

hi,

Can you also share the vertica.log file for this instance ?

Regards,
Raghav Agrawal