ISSUE SUMMARY:
1. Mostly we are getting this error when trying to login " invalid security token "
2. we are getting these after name " COM_COMMUNITY_EVENTS_ACTIVITIES_NEW_EVENT " after I created an event
you can see for this profile : swahilifashionweek COM_COMMUNITY_EVENTS_ACTIVITIES_NEW_EVENT

STEPS TO REPLICATE:
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RESULT
EXPECTED RESULT
BROWSER

Hi Tarun,

1.it can be cache issue, I found some cache issue on your site, please you disable them and use only one cache plugin, I suggest you only enable this plugin JotCache

2. that string was missing, and I already added this again.. should fine now

thank you!