Filebeat custom Module

Dear All
I'm implementing a new module for filebeat. I followed the instructions
I created fileset
I created pipeline
I created fields
I added documentation

but when I execute make update command I have an error
Error: failed to run "gopath/src/github.com/elastic/beats/build/ve/linux/bin/pip install --quiet -Ur

And second question is if I resolve this problem how I can add new module to filebeats standard modules?

best regards