Help installing nodebb

[LEVI HAVIV]

Hello everyone,
When I recently tried to run a nodebb root command, or rather, anything that contains the command: ./nodebb.
The following output is obtained:

/bin/sh: 1: npm: not found
Error installing dependencies!
message: Command failed: npm install --production
stdout: null
stderr: null
/home/levi/nodebb770/src/cli/package-install.js:82
                throw e;
                ^

Error: Command failed: npm install --production
    at checkExecSyncError (child_process.js:629:11)
    at Object.execSync (child_process.js:666:13)
    at Object.installAll (/home/levi/nodebb770/src/cli/package-install.js:73:9)
    at Object.<anonymous> (/home/levi/nodebb770/src/cli/index.js:62:18)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Module.require (internal/modules/cjs/loader.js:692:17)

Can anyone help me regarding this what exactly does it mean? And what is the solution?

Specifically now I'm trying to run the .nodebb setup command

urgent

I'm willing to give the ssh keys for someone to do it for me ...
@administrators

[PitaJ]

@LEVI-HAVIV have you installed Nodejs? It appears the npm command (included when installing Nodejs) doesn't exist on your system.