# Unable to start discourse from source while running "bin/ember-cli -u"

**URL:** https://meta.discourse.org/t/unable-to-start-discourse-from-source-while-running-bin-ember-cli-u/290967
**Category:** Self-hosting
**Tags:** ember, rails-console
**Created:** [January 9, 2024, 7:09am UTC](https://meta.discourse.org/t/unable-to-start-discourse-from-source-while-running-bin-ember-cli-u/290967 "2024-01-09T07:09:37Z")
**Posts on this page:** 5
**Page:** 1

<div class="post-metadata">

### Author: ![Ilamathi\_Natarajan](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/ilamathi_natarajan/32/353460_2.png) [@Ilamathi\_Natarajan](https://meta.discourse.org/u/Ilamathi_Natarajan)
#### Post date: [January 9, 2024, 7:09am UTC](https://meta.discourse.org/t/unable-to-start-discourse-from-source-while-running-bin-ember-cli-u/290967/1 "2024-01-09T07:09:37Z")

</div>

I am trying to install Discourse on Ubuntu, and while running **bin/ember-cli -u** , the following errors are occurring,

```plaintext
warning Resolution field "unset-value@2.0.1" is incompatible with requested version "unset-value@^1.0.0"
patch-package 8.0.0
Applying patches...
@ember/test-helpers@2.9.4 ✔
babel-plugin-debug-macros@0.3.4 ✔
content-tag@1.2.2 ✔
ember-cli@5.0.0 ✔
ember-this-fallback@0.4.0 (1 deprecation-name) ✔
ember-this-fallback@0.4.0 (2 themes) ✔
virtual-dom@2.1.1 ✔
Ember CLI running on PID: 28775
I, [2024-01-09T12:16:20.169085 #28806] INFO -- : Refreshing Gem list
Starting CSS change watcher
I, [2024-01-09T12:16:22.567391 #28806] INFO -- : listening on addr=127.0.0.1:3000 fd=24
Deprecation notice: `SiteSetting.min_trust_to_create_tag` has been deprecated. Please use `SiteSetting.create_tag_allowed_groups` instead. (removal in Discourse 3.3) 
At /home/aximsoft-ilamathin/discourse/lib/guardian/tag_guardian.rb:12:in `can_create_tag?`
Proxying to http://127.0.0.1:3000
- building... 
I, [2024-01-09T12:16:24.045355 #28806] INFO -- : starting 1 supervised sidekiqs
I, [2024-01-09T12:16:24.073312 #28806] INFO -- : master process ready
Loading Sidekiq in process id 28929
I, [2024-01-09T12:16:24.195961 #28930] INFO -- : worker=0 ready
I, [2024-01-09T12:16:24.210706 #28936] INFO -- : worker=2 ready
I, [2024-01-09T12:16:24.219471 #28933] INFO -- : worker=1 ready
undefined:1
{"type":"job","id":0,"error":null,"result":{"result":[{"buffer":true,"string":true},{"data":{"version":3,"names":["w","window","d","define","esc","require","_embroiderRouteBundles_","names","load"],"sources":["/....

```

```plaintext
SyntaxError: Unexpected token in JSON at position 219260
    at JSON.parse (<anonymous>)
    at /home/aximsoft-ilamathin/discourse/app/assets/javascripts/node_modules/thread-loader/dist/WorkerPool.js:144:30
    at Socket.onChunk (/home/aximsoft-ilamathin/discourse/app/assets/javascripts/node_modules/thread-loader/dist/readBuffer.js:40:9)
    at Socket.emit (node:events:517:28)
    at addChunk (node:internal/streams/readable:335:12)
    at readableAddChunk (node:internal/streams/readable:308:9)
    at Readable.push (node:internal/streams/readable:245:10)
    at Pipe.onStreamRead (node:internal/stream_base_commons:190:23)

Node.js v18.18.0
[bin/ember-cli] ember-cli process stopped. Terminating unicorn.
I, [2024-01-09T12:16:29.807626 #28806] INFO -- : reaped #<Process::Status: pid 28930 exit 0> worker=0
I, [2024-01-09T12:16:29.807784 #28806] INFO -- : reaped #<Process::Status: pid 28933 exit 0> worker=1
I, [2024-01-09T12:16:29.807859 #28806] INFO -- : reaped #<Process::Status: pid 28936 exit 0> worker=2
I, [2024-01-09T12:16:29.807937 #28806] INFO -- : master complete

```

---

<div class="post-metadata">

### Author: ![pmusaraj](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/pmusaraj/32/119489_2.png) [@pmusaraj](https://meta.discourse.org/u/pmusaraj)
#### Post date: [January 9, 2024, 5:52pm UTC](https://meta.discourse.org/t/unable-to-start-discourse-from-source-while-running-bin-ember-cli-u/290967/2 "2024-01-09T17:52:41Z")

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Can you try clearing your `node_modules` folder and running `yarn` again to install the dependencies? Also, if you have multiple node versions installed, you could try with a more recent version. (Locally, I have node v21.2.0 and building the app works.)

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<div class="post-metadata">

### Author: ![Ilamathi\_Natarajan](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/ilamathi_natarajan/32/353460_2.png) [@Ilamathi\_Natarajan](https://meta.discourse.org/u/Ilamathi_Natarajan)
#### Post date: [January 10, 2024, 6:30am UTC](https://meta.discourse.org/t/unable-to-start-discourse-from-source-while-running-bin-ember-cli-u/290967/3 "2024-01-10T06:30:30Z")

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Thank you so much! @pmusaraj

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<div class="post-metadata">

### Author: ![Ezequiel\_Salas](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/ezequiel_salas/32/303809_2.png) [@Ezequiel\_Salas](https://meta.discourse.org/u/Ezequiel_Salas)
#### Post date: [February 4, 2024, 10:39pm UTC](https://meta.discourse.org/t/unable-to-start-discourse-from-source-while-running-bin-ember-cli-u/290967/4 "2024-02-04T22:39:56Z")

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i had the same issue running node `v20.5.1`, upraded it to `v21.2.0` resolved the issue 🙂

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<div class="post-metadata">

### Author: ![system](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/system/32/443519_2.png) [@system](https://meta.discourse.org/u/system)
#### Post date: [March 5, 2024, 10:40pm UTC](https://meta.discourse.org/t/unable-to-start-discourse-from-source-while-running-bin-ember-cli-u/290967/5 "2024-03-05T22:40:50Z")

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