Issues loading the npm version on latest Pi4 with latest OS version

[meteosat007]

I would really like to use this software on a pair of Pylontech US3000 batteries to gain an insight into the readings and status.
Another pi 3 is monitoring the RS485 port on my Sofar Hybrid 3600 inverter with no issues taking readings into Emoncms and an InfluDb for Grafana reporting which works really well.

I propose to use a USB to serial/RS485 into the first battery but so far cannot load the software.

Any advice welcomed and medium level skills.

Errors from the install fills several pages even with latest NPM and Node versions.

Look forward to hearing from you on this matter.

Alan

[meteosat007]

Looks like i'm having issues with the crc16 module .

[email protected] install /home/pi/solar-sis/example/US3000+US2000/node_modules/crc16
node-gyp rebuild

gyp ERR! clean error
gyp ERR! stack Error: EACCES: permission denied, rmdir 'build'
gyp ERR! System Linux 5.4.72-v7l+
gyp ERR! command "/usr/bin/node" "/usr/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /home/pi/solar-sis/example/US3000+US2000/node_modules/crc16
gyp ERR! node -v v12.19.0
gyp ERR! node-gyp -v v5.1.0
gyp ERR! not ok
npm WARN [email protected] No repository field.
npm WARN [email protected] No license field.

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] install: node-gyp rebuild
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] install script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! /root/.npm/_logs/2020-11-10T22_14_27_793Z-debug.log