No Notables created but correlation searches are working manually

[saurabhsumangat]

till few afters before all my notables were working properly.
I made changes in XML file of default.xml on navigation menus using user interface on splunk.
After that i restarted the splunk but was unable to get back the splunk and got the error:

Read Timeout

after few hours without doing anything as such i could get back on SPLUNK
But i stopped getting any notables created.
Now my notables are 0 and earlier it used to be more than 95notables per hour

Please help me out with the troublehsooting

[smoir_splunk]

I suggest contacting support. It sounds like there is something else going on here. Are you sure you only changed the default.xml navigation file?

[saurabhsumangat]

yes , i changed only default.xml through SPLUNK interface