I don't see why the server

badlop — Thu, 23 Feb 2017 16:23:33 +0000

I don't see why the server would restart just for having that badmatch problem.

That error means that in this function, in that line:
[{mod_post_log,log_packet,3,[{file,"src/mod_post_log.erl"},{line,49}]}
you have an assigment (a match) like
a = b
but obviously b doesn't match a.
In your case the code may be more complicated, like:
A=a,
A=b,
or:
{ok, Value} = {xmlel, a, b, c}.

ejabberd - Comments for "Ejabberd server restarts again and again..! "

I don't see why the server