My system is ubuntu18.04, when I Compile chirpstack-application-server，it’s not very smooth. According the err I install npm，then I try again，it doesn’t repot last err，but npm print ‘chirpstack-application-server-ui’ is not in the npm registry. This like You said this is most likely a problem with the chirpstack-application-server-ui package? Hope you can verify this problem.
Thank you very much
That is correct, the package is compiled during the ChirpStack Application Server build and bundled with the Go binary No need to fetch this from NPM.
well，because I want to change chirpstack-application-server code to praser data，so I need to recompile this chirpstack-application-server. But after I have executed make command and downloaded all pkg，then still report that problem，this is two pictures：
what should I do?
oh，My system is still ubuntu18.04
Please use the Docker Compose development environment. It provides you with a pre-setup environment for development: https://www.chirpstack.io/application-server/community/source/