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The simplest explanation is of course that nodejs is not installed on your Jobe server. Has the Jobe server been upgraded since last year? If so, I think you need to talk to your sysadmins. The standard install instructions include installation of nodejs but perhaps something broke during the install?

The first thing to check is the list of languages supported by your Jobe server. The URL

http:///jobe/index.php/restapi/languages

gives you the current list but if the Jobe server is firewalled (as it should be) you probably can't easily get at that url with a browser. A solution is to run a coderunner Python question with the code

import urllib.request

with urllib.request.urlopen("http://localhost/jobe/index.php/restapi/languages") as infile:
    print(infile.read().decode('utf8'))

On our new 2022 production server, the output from that is

[["c","9.3.0"],["cpp","9.3.0"],["java","11.0.13"],["nodejs","10.19.0"],["octave","5.2.0"],["pascal","3.0.4"],["php","7.4.3"],["python3","3.9.1"]]

Note that nodejs appears in the third position. What is your output?

If nodejs is missing, the bash command

sudo apt-get install nodejs

should install it. But note that after installing you will need to reboot the server to rebuild the language cache file.