I cannot access my manage dashboard.
In Splunk Enterprise 8.0.2.1 And Search Header Cluster.
If you have seen 500 Internal Server Error like below, help me please.
==============error log=============
2020-03-27 18:49:54,279 ERROR [5e7dcc420a7fb6f4323890] error:335 - Traceback (most recent call last):
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/cherrypy/_cprequest.py", line 628, in respond
self._do_respond(path_info)
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/cherrypy/_cprequest.py", line 687, in _do_respond
response.body = self.handler()
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/cherrypy/lib/encoding.py", line 219, in __call__
self.body = self.oldhandler(*args, **kwargs)
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/splunk/appserver/mrsparkle/lib/htmlinjectiontoolfactory.py", line 75, in wrapper
resp = handler(*args, **kwargs)
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/cherrypy/_cpdispatch.py", line 54, in __call__
return self.callable(*self.args, **self.kwargs)
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/splunk/appserver/mrsparkle/lib/routes.py", line 383, in default
return route.target(self, **kw)
File "</SPLUNK/splunk_sh01/lib/python3.7/site-packages/decorator.py:decorator-gen-632>", line 2, in advancedsearch
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/splunk/appserver/mrsparkle/lib/decorators.py", line 40, in rundecs
return fn(*a, **kw)
File "</SPLUNK/splunk_sh01/lib/python3.7/site-packages/decorator.py:decorator-gen-630>", line 2, in advancedsearch
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/splunk/appserver/mrsparkle/lib/decorators.py", line 118, in check
return fn(self, *a, **kw)
File "</SPLUNK/splunk_sh01/lib/python3.7/site-packages/decorator.py:decorator-gen-629>", line 2, in advancedsearch
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/splunk/appserver/mrsparkle/lib/decorators.py", line 166, in validate_ip
return fn(self, *a, **kw)
File "</SPLUNK/splunk_sh01/lib/python3.7/site-packages/decorator.py:decorator-gen-628>", line 2, in advancedsearch
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/splunk/appserver/mrsparkle/lib/decorators.py", line 245, in preform_sso_check
return fn(self, *a, **kw)
File "</SPLUNK/splunk_sh01/lib/python3.7/site-packages/decorator.py:decorator-gen-627>", line 2, in advancedsearch
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/splunk/appserver/mrsparkle/lib/decorators.py", line 284, in check_login
return fn(self, *a, **kw)
File "</SPLUNK/splunk_sh01/lib/python3.7/site-packages/decorator.py:decorator-gen-626>", line 2, in advancedsearch
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/splunk/appserver/mrsparkle/lib/decorators.py", line 304, in handle_exceptions
return fn(self, *a, **kw)
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/splunk/appserver/mrsparkle/controllers/admin.py", line 2995, in advancedsearch
'breadcrumbs': self.generateBreadcrumbs(namespace, 'advancedsearch'),
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/splunk/appserver/mrsparkle/controllers/admin.py", line 1381, in render_admin_template
args = root.app.buildViewTemplate(namespace, ADMIN_VIEW_NAME, render_invisible=True, build_nav=False, include_app_css_assets=False)
File "/SPLUNK/splunk_sh01/lib/python3.7/site-packages/splunk/appserver/mrsparkle/controllers/view.py", line 806, in buildViewTemplate
viewList.sort(key=lambda x: x['label'])
TypeError: '<' not supported between instances of 'NoneType' and 'str'
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