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Manage palette not available
I tried to install a new node in node red. Unfortunately the "Manage palette" is not available in the menu.
A Google search told me, that it could be due to an older version of npm.

I´ve done already an updat with:
sudo apt update
sudo apt upgrade

How do I update npm in Openplotter without causing trouble?
sudo npm install -g npm@latest
Hola Sailoog, moltes gràcies!
Unfortunaltely that didn´t help.  There´s a long error message. 

xx@xx:~ $ sudo npm install -g npm@latest
    throw err

TypeError: Class extends value undefined is not a constructor or null
    at Object.<anonymous> (/usr/lib/node_modules/npm/node_modules/fs-minipass/lib/index.js:136:4)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12)
    at Module.require (node:internal/modules/cjs/loader:1143:19)
    at require (node:internal/modules/cjs/helpers:121:18)
    at Object.<anonymous> (/usr/lib/node_modules/npm/node_modules/cacache/lib/content/read.js:4:13)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)

Node.js v18.17.1

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