Colibri-some iterations doesn't run the simulation

I have run many times of this file, which contains a butterfly simulation. Every time some of the outputs are always -999. Can anyone help me please!

It seems that the simulation doesn’t work well, not the colibri.

Hello @Cordelia
Please upload the GH file.

hello @Mohammad.hakim.a Thank you sooo much for your reply. It seems butterfly doesn’t work, rather than colibri, can you help me find out what happened to my butterfly? I just post a new one, can you please check this link? Butterfly: snappyhexmesh runtime error - grasshopper / butterfly - Ladybug Tools | Forum