Node.js menu on a migrated subscription in Plesk doesn’t work: Call to a member function getPath() on null

Symptoms

• Unable to open Subscriptions > example.com > Node.js for newly migrated domain:

  Server Error
  500
  Error
  Call to a member function getPath() on null

• Domain example.com has non-existent ext-nodejs-handlerPath:

  # plesk db "select val from dom_param where param='ext-nodejs-handlerPath' and dom_id=(select id from domains where name='example.com' limit 1);"
  +-----------------------------+
  | val |
  +-----------------------------+
  | /opt/plesk/node/17/bin/node |
  +-----------------------------+

  # ls -l /opt/plesk/node/17/bin/node
  ls: cannot access /opt/plesk/node/17/bin/node: No such file or directory

• Other Node.js handlers versions are found on the server:

  # ls -1 /opt/plesk/node/*/bin/node
  /opt/plesk/node/10/bin/node
  /opt/plesk/node/12/bin/node
  /opt/plesk/node/14/bin/node
  /opt/plesk/node/16/bin/node

Cause

This is a Plesk Node.js extension bug: EXTNODEJS-122. Which will be fixed in future updates.

Resolution

As a workaround apply one of the following alternatives:

• Re-install Node.js extension by removing and installing this again with this instructions.

• Update the the ext-nodejs-handlerPath on the database:

  1. Connect to the server via SSH

  2. Backup the Plesk 'psa' database

  3. Login to the database

     # plesk db

  4. Modify the ext-nodejs-handlerPath to /opt/plesk/node/16/bin/node:

     # update dom_param set val='/opt/plesk/node/16/bin/node' where dom_id=(select id from domains where name='example.com' limit 1) and param='ext-nodejs-handlerPath';

     Note: Change example.com and the node version 16 accordingly based on the versions found on the server.

  5. Log into Plesk

  6. Go to Domains > example.com > Node.js.

  7. Click Disable node.js button.

  8. Click Enabled node.js button.