There is a mistake when running the installation script "install_flowbat_ubuntu.sh".
when at this process:fetchmetadata sill install loadAlldepsintodeaiTree,it shows that: Processing triggers for libc-bin (2.19-0ubuntu6.9) ... Processing triggers for ureadahead (0.100.0-16) ... npm ERR! code EPROTO npm ERR! errno EPROTO npm ERR! request to https://registry.npmjs.org/node-gyp failed, reason: write EPROTO 140565006227328:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:../deps/openssl/openssl/ssl/s23_clnt.c:827: npm ERR!
npm ERR! A complete log of this run can be found in: npm ERR! /home/xxxxx/.npm/_logs/2018-03-23T07_45_37_007Z-debug.log flowbat start/running, process 54704
Should be fixed with the most recent update.
https://github.com/chrissanders/FlowBAT/commit/3cd3c54ee338c970f364792dfe1e46919ecede47