jothiprasath216 <jothiprasath21(at)gmail(dot)com> writes:
> Could you please let me know what are the other possibilities that could
> have caused this crash?
There was, absolutely positively, a log message emitted by that
elog/ereport call before it called abort(). If you didn't find it
then you're looking in the wrong place, or you have a broken
logging configuration.
Without that message nor any other information, it's impossible to
speculate further.
regards, tom lane