unexpected behaviour

Hi @valentin.groues , why if I do

https://biokb.lcsb.uni.lu/tmh/getCooccurrence/DOID:2841?limit=100

I get results from Jensen service but if I do

https://biokb.lcsb.uni.lu/tmh/getCooccurrence/DOID:2841?limit=100&type=-26

I don't get anything?

Is just that for that particular type there is nothing? Is weird, because it says there are elements with entity types -2