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$ ruby -ne 'BEGIN{h={};h.default=0};(a=$_.scan(/^.*logs\/(.[^\/]*)(.[^:]*)/).join; h[a]+=1) \
if /ERROR|INFO/;END{h.each{|x,y| print "#{x} Exception caught #{y}\n" } } ' file

awk -F':|\] ' '/ERROR|INFO/{sub(".*logs/","",$1);a[$1 OFS $NF]++}END{for(i in a)print i,a[i]}' file

Another approach:
awk '/ERROR|INFO/{sub(".*logs/","");sub(":.*","");a[$0]++}
END{for (i in a)print i, "Exception is caught", a[i]}' file

Try: perl -ne '/(?<=logs\/)([^\/0-9]+).*?\/([^:]+).*(?<=] )(.*?)$/;$a{"$1*/$2,$3"}++;END{for $i (keys %a){print "$i, $a{$i}\n"}}' logfile