UXP Devtools CLI - Websocket error [object Object]

UXP Developer Tool
1

Hi,

I’m trying to get the CLI version of UXP Devtools to work, however I end up with an error when trying to load a plug-in with the uxp plugin load command, se below:

I start by starting the service:

> uxp service start
UXP Developer Service now running at port 14001
New Server client Connected : Type : app
PS(23.1.0) connected to service ...

Then I run the command to enable the devtools

> uxp devtools enable

Administrator privileges are needed to enable UXP Developer Tools on this system. By continuing you agree to
1) Adobe's Terms of Use: https://www.adobe.com/legal/terms.html
2) Adobe Developer Additional Terms: http://www.adobe.com/go/developer-terms
Press Enter to Continue...


UXP DevTools is Enabled now.

However, when trying to initialize a plugin it just outputs the following:

> uxp plugin load
Websocket error [object Object]
Command 'plugin load' failed.
[object Object]

Tried with both on a new plugin initialization (running uxp plugin init) as well as this code: uxp-photoshop-plugin-samples/hello-world-panel-js-sample at main · AdobeDocs/uxp-photoshop-plugin-samples · GitHub

If I try uxp plugin validate, I get the following error:

Websocket error [object Object]
Manifest Validation Failed.
[object Object]

If I try uxp apps list to list running apps to connect to i recieve:

Websocket error [object Object]
Command 'apps list' failed.
[object Object]

Any idéas why it’s not working? I’ve installed the CLI version by cloning the repository and building via Yarn.

Running on Windows 10 Enterprise, 22H2 with Photoshop 2022 ( 23.1.0 )
It’s an enterprise environment without Creative Cloud App, so I’m unable to install the UI version of the UXP Developer Tools.

2

Your ‘localhost’ is resolved as IP v6 instead of v4

Find this in the devtools-cli repo:
ws://localhost:${port}/socket/cli;
Then change it to:
ws://127.0.0.1:${port}/socket/cli;

2 Likes
3

Marvelous! Test plug-in loads like a charm with the above fix.

If anyone stumbles upon this issue again; the main issue seems to be row 105 in devtools-cli/packages/uxp-devtools-core/src/core/client/connection/CliClientController.js

There are a few other places where localhost is referenced, might be a good idea to adjust there as well, I only adjusted the above line though, to see if I could get the application to load a test plugin, and it finally did!

This is something I never would have solved on my own, I can’t thank you enough @dongdt_pxz!

1 Like