Termite plug-in

Dear all

I have an issue with one particular case and would like to know if you can advise on what is not working.

I am feeding the Graph Maker with a relatively long csv (32 rows). The reader reads the data perfectly, but there seems to be an error with the graph network. (see below).

I checked the relations in the csv many times and they are all correct. The rest of the definition seems to work perfectly (with shorter csv).

Would you able to suggest anything to resolve this?

Many thanks, Fenia