node-red-contrib-modbus installation problem

I’m trying to install node-red-contrib-modbus but everytime I obtain this error

TRACE: hass.has_value: [
“node-red-contrib-modbus”
]
TRACE: hass.jq: /data/options.json .npm_packages
npm ERR! cb() never called!
npm ERR! This is an error with npm itself. Please report this error at:
npm ERR! https://npm.community
npm ERR! A complete log of this run can be found in:
npm ERR! /root/.npm/_logs/2019-02-13T20_38_55_189Z-debug.log
TRACE: hass.die: Failed installing npm package node-red-contrib-modbus
TRACE: hass.has_value: Failed installing npm package node-red-contrib-modbus
FATAL: Failed installing npm package node-red-contrib-modbus

Unfortunately the “cb() never called” is not the underlying issue, so some questions to get more context:
What command are you running?
What version of npm are you using?
Are there any other errors displayed onscreen or in the log?

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