thick leaf Mar 28, 2026, 3:47 PM

#

I have installed unlosth with:
irm https://unsloth.ai/install.ps1 | iex

I'm launching it as unsloth studio -H 0.0.0.0 -p 8888

Starting Unsloth Studio on http://...:8888
✅ Frontend loaded from C:\Users\RUAN\.unsloth\studio\unsloth_studio\Lib\site-packages\studio\frontend\dist
INFO:     Started server process [12000]
INFO:     Waiting for application startup.
Hardware detected: CUDA — NVIDIA GeForce GTX 1060 6GB
INFO:     Application startup complete.
INFO:     Uvicorn running on http://0.0.0.0:8888 (Press CTRL+C to quit)
{"timestamp": "2026-03-28T15:41:41.308756Z", "level": "info", "event": "request_completed", "method": "GET", "path": "/", "status_code": 200, "process_time_ms": 2.01}
{"timestamp": "2026-03-28T15:41:41.735060Z", "level": "info", "event": "Pre-caching helper GGUF: unsloth/Qwen3.5-4B-GGUF/Qwen3.5-4B-UD-Q4_K_XL.gguf"}
{"timestamp": "2026-03-28T15:41:41.786124Z", "level": "info", "event": "request_completed", "method": "GET", "path": "/api/health", "status_code": 200, "process_time_ms": 0.97}
{"timestamp": "2026-03-28T15:41:41.873002Z", "level": "info", "event": "Helper GGUF cached: 1 file(s)"}
{"timestamp": "2026-03-28T15:41:42.294851Z", "level": "info", "event": "request_completed", "method": "GET", "path": "/", "status_code": 200, "process_time_ms": 1.39}

🦥 Unsloth Studio is running
────────────────────────────────────────────────────
  On this machine — open this in your browser:
    http://127.0.0.1:8888
    (same as http://localhost:8888)

  From another device on your network / to share:
    http://...:8888

  API & health:
    http://127.0.0.1:8888/api
    http://127.0.0.1:8888/api/health
────────────────────────────────────────────────────
  Tip: if you are on the same computer, use the Local link above.

#

When I visit http://localhost:8888/ it shows nothing, just a black screen, no text, nothing

http://127.0.0.1:8888/api
output:{"error":"API endpoint not found"}
http://127.0.0.1:8888/api/health
output: {"status":"healthy","timestamp":"2026-03-28T12:43:07.774522","service":"Unsloth UI Backend","device_type":"windows","chat_only":false}

I'm using Win11 24H2
I already tried restarting my pc, reinstalling unsloth, starting as admin, what I'm missing?

heavy ravine Mar 28, 2026, 3:49 PM

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are you using chrome?

thick leaf Mar 28, 2026, 3:50 PM

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I have tested on chrome, brave, edge

heavy ravine Mar 28, 2026, 3:51 PM

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on chrome, can you click the lock on the left of the url

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and clear site data

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actually this

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click on Cookies and Site Data

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Manage on device site data

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then click the trash bin

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you'll see a reload button the page, click it

thick leaf Mar 28, 2026, 3:54 PM

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thick leaf Mar 28, 2026, 3:54 PM

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heavy ravine then click the trash bin

theres no trash bin

heavy ravine Mar 28, 2026, 3:55 PM

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i've seen this issue before

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i am trying to remember

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if you type F12

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to open chrome dev tools

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then choose network

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then Reload the page

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then take a screenshot and show me

thick leaf Mar 28, 2026, 3:56 PM

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heavy ravine Mar 28, 2026, 3:56 PM

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@glad sluice help me out with this

glad sluice Mar 28, 2026, 3:57 PM

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In elements

thick leaf Mar 28, 2026, 3:57 PM

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console errors

📎 message.txt

glad sluice Mar 28, 2026, 3:57 PM

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What's the Dom look like

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The html

glad sluice Mar 28, 2026, 3:58 PM

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thick leaf console errors

catahhh

heavy ravine Mar 28, 2026, 3:58 PM

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wait

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wait

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are you starting the server on your local machine?

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or on a remote machine?

thick leaf Mar 28, 2026, 3:58 PM

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local

heavy ravine Mar 28, 2026, 3:58 PM

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just need to check

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ok

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Mugi? any thoughts

thick leaf Mar 28, 2026, 3:59 PM

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glad sluice The html

glad sluice Mar 28, 2026, 3:59 PM

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Something is very wrong those console errors

heavy ravine Mar 28, 2026, 3:59 PM

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yes but i just tried on windows an hour ago

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all was good

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windows 10

glad sluice Mar 28, 2026, 4:01 PM

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Can u click

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On one of js files

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In link element

thick leaf Mar 28, 2026, 4:01 PM

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glad sluice Mar 28, 2026, 4:02 PM

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Ok it's there good

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Sec

heavy ravine Mar 28, 2026, 4:02 PM

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wait might be an extension

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or ad blocker?

thick leaf Mar 28, 2026, 4:02 PM

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i have no extension on chrome

heavy ravine Mar 28, 2026, 4:02 PM

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or antivirus flagging that injection?

thick leaf Mar 28, 2026, 4:02 PM

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its clean, as i dont use it

heavy ravine Mar 28, 2026, 4:02 PM

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mm

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oh wait

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wait

glad sluice Mar 28, 2026, 4:03 PM

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he requests favicon correctly

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console errors are all js files

thick leaf Mar 28, 2026, 4:03 PM

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i dont think its antivirus, i have windows defender disabled on gpedit 💀

heavy ravine Mar 28, 2026, 4:03 PM

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thick leaf I have installed unlosth with: `irm https://unsloth.ai/install.ps1 | iex` I'm l...

look correct. reading from the right directory

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ok

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can you go to C:\Users\RUAN\.unsloth\studio\unsloth_studio\Lib\site-packages\studio\frontend\dist and show us the content of that directory?

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also in chrome's url box can you type chrome://version. and tell me what u get?

thick leaf Mar 28, 2026, 4:04 PM

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 Directory of C:\Users\RUAN\.unsloth\studio\unsloth_studio\Lib\site-packages\studio\frontend\dist

28/03/2026  12:25    <DIR>          .
28/03/2026  12:25    <DIR>          ..
28/03/2026  12:25    <DIR>          assets
28/03/2026  12:14           166.049 blacklogo.png
28/03/2026  12:14            13.409 favicon.png
28/03/2026  12:25    <DIR>          fonts
28/03/2026  12:25    <DIR>          Hellix font official
28/03/2026  12:14             4.746 huggingface.svg
28/03/2026  12:14             1.495 index.html
28/03/2026  12:14            54.017 logotext.png
28/03/2026  12:14            50.943 rounded-512.png
28/03/2026  12:14            85.845 rounded.png
28/03/2026  12:25    <DIR>          Sloth emojis
28/03/2026  12:14           629.236 studio github landscape colab display.png
28/03/2026  12:14           720.943 unsloth-gem.png
28/03/2026  12:14           370.070 unsloth.ico
28/03/2026  12:14             1.654 vite.svg
28/03/2026  12:14           162.842 whitelogo.png
              12 File(s)      2.261.249 bytes
               6 Dir(s)  632.496.242.688 bytes free

heavy ravine Mar 28, 2026, 4:04 PM

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index.html is there

heavy ravine Mar 28, 2026, 4:04 PM

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heavy ravine also in chrome's url box can you type `chrome://version.` and tell me what u get...

what about this

thick leaf Mar 28, 2026, 4:05 PM

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Chrome logo
Google LLC
Copyright 2026 Google LLC. All rights reserved.
Google Chrome    146.0.7680.165 (Official Build) (64-bit) (cohort: Stable Installs & Version Pins) 
Revision    4b989da09e15a7dc0de0785cb5ff232aadae3f0f-refs/branch-heads/7680@{#2932}
OS    Windows 11 Version 24H2 (Build 26100.4652)
JavaScript    V8 14.6.202.26
User Agent    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36
Command Line    "C:\Program Files\Google\Chrome\Application\chrome.exe" --origin-trial-disabled-features=CanvasTextNg|WebAssemblyCustomDescriptors --restart --flag-switches-begin --enable-features=WebContentsForceDark --flag-switches-end
Executable Path    C:\Program Files\Google\Chrome\Application\chrome.exe

heavy ravine Mar 28, 2026, 4:05 PM

#

also

Stop studio first, then:

C:\Users\RUAN\.unsloth\studio\unsloth_studio\Scripts\python -c "
import http.server, socketserver
class H(http.server.SimpleHTTPRequestHandler):
    def do_GET(self):
        self.send_response(200)
        self.send_header('Content-Type', 'text/html')
        self.end_headers()
        self.wfile.write(b'<h1>Port 8888 works!</h1>')
with socketserver.TCPServer(('0.0.0.0', 8888), H) as s:
    print('Serving on http://localhost:8888')
    s.serve_forever()
"

then open your browser at http://localhost:8888 , do you see Port 8888 works ?

glad sluice Mar 28, 2026, 4:06 PM

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i dont undrestand why mime type is wrong

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send by server

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wait

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gpedit

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u said

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did u touch something else in there?

thick leaf Mar 28, 2026, 4:06 PM

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no

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just disabled defender

heavy ravine Mar 28, 2026, 4:06 PM

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heavy ravine also # Stop studio first, then: ``` C:\Users\RUAN\.unsloth\studio\unsloth_studi...

this please

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😄

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i am lagging ugh

thick leaf Mar 28, 2026, 4:08 PM

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heavy ravine also # Stop studio first, then: ``` C:\Users\RUAN\.unsloth\studio\unsloth_studi...

heavy ravine Mar 28, 2026, 4:08 PM

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ok so nothing is blocking your port

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now we know as much

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so antivirus or defender possibility is out

glad sluice Mar 28, 2026, 4:09 PM

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thick leaf

in network tab click one of requests please what does Response Headers say

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u can refresh page to get requests if u cleared em

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the .js requests specificly any of those

thick leaf Mar 28, 2026, 4:13 PM

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glad sluice in network tab click one of requests please what does Response Headers say

glad sluice Mar 28, 2026, 4:14 PM

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do the .js file

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like second

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request

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for example

thick leaf Mar 28, 2026, 4:14 PM

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glad sluice do the .js file

glad sluice Mar 28, 2026, 4:14 PM

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IC

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ok

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now last thing

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C:\Users\RUAN\.unsloth\studio\unsloth_studio\Scripts\python -c "import mimetypes; print(mimetypes.guess_type('test.js'))"

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what does it say

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in console

thick leaf Mar 28, 2026, 4:15 PM

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('text/plain', None)

glad sluice Mar 28, 2026, 4:15 PM

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BRUH how xd

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ok

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looks like it will be easy

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open powershell as admin

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reg add "HKCR\.js" /v "Content Type" /d "application/javascript" /f

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restart studio after that

heavy ravine Mar 28, 2026, 4:17 PM

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back

thick leaf Mar 28, 2026, 4:17 PM

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now the command output ('application/javascript', None)

glad sluice Mar 28, 2026, 4:17 PM

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perfect

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restart studio

heavy ravine Mar 28, 2026, 4:18 PM

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glad sluice ```reg add "HKCR\.js" /v "Content Type" /d "application/javascript" /f```

that's some kungfu right there

thick leaf Mar 28, 2026, 4:18 PM

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glad sluice Mar 28, 2026, 4:19 PM

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why

thick leaf Mar 28, 2026, 4:19 PM

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whenever i reload the page it prints on the console

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well-known/appspecific/com.chrome.devtools.json", "status_code": 200, "process_time_ms": 1.93}
{"timestamp": "2026-03-28T16:18:09.577658Z", "level": "info", "event": "request_completed", "method": "GET", "path": "/", "status_code": 200, "process_time_ms": 1.84}
{"timestamp": "2026-03-28T16:18:09.592020Z", "level": "info", "event": "request_completed", "method": "GET", "path": "/.well-known/appspecific/com.chrome.devtools.json", "status_code": 200, "process_time_ms": 2.19}

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i will restart my machine to be sure about the reg who knows MSFT''

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brb

glad sluice Mar 28, 2026, 4:20 PM

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yes thats good

thick leaf Mar 28, 2026, 4:22 PM

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continues the same D:

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i also tested on firefox

glad sluice Mar 28, 2026, 4:22 PM

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u fully restarted pc?

thick leaf Mar 28, 2026, 4:22 PM

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yes

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im using two machines thats why i continued on, on discord

glad sluice Mar 28, 2026, 4:23 PM

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do u have

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vscode?

thick leaf Mar 28, 2026, 4:23 PM

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yes

glad sluice Mar 28, 2026, 4:23 PM

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C:\Users\RUAN.unsloth\studio\unsloth_studio\Lib\site-packages\studio\backend\main.py

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do u have this file?

thick leaf Mar 28, 2026, 4:23 PM

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yes

heavy ravine Mar 28, 2026, 4:24 PM

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wait one second

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before he edits any files

glad sluice Mar 28, 2026, 4:24 PM

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add this before import from fastapi

heavy ravine Mar 28, 2026, 4:24 PM

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no wait

glad sluice Mar 28, 2026, 4:24 PM

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  mimetypes.add_type("application/javascript", ".js")```

heavy ravine Mar 28, 2026, 4:24 PM

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one sec

glad sluice Mar 28, 2026, 4:24 PM

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its harmless he can delete that rq

heavy ravine Mar 28, 2026, 4:24 PM

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@glad sluice let's test manually first

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reg add "HKCR\.js" /v "Content Type" /d "application/javascript" /f
reg add "HKCR\.css" /v "Content Type" /d "text/css" /f

then

C:\Users\RUAN\.unsloth\studio\unsloth_studio\Scripts\python -c "import mimetypes; print(mimetypes.guess_type('test.js')); print(mimetypes.guess_type('test.css'))"

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show me what that gives u

thick leaf Mar 28, 2026, 4:25 PM

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('application/javascript', None)
('text/css', None)

glad sluice Mar 28, 2026, 4:25 PM

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thats correct

heavy ravine Mar 28, 2026, 4:25 PM

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mm that's correct now

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can you

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run this again

thick leaf Mar 28, 2026, 4:26 PM

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run what?

heavy ravine Mar 28, 2026, 4:26 PM

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irm https://unsloth.ai/install.ps1 | iex

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and then try

unsloth studio start -H 0.0.0.0 -p 8000

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and then check that port http://localhost:8000

thick leaf Mar 28, 2026, 4:28 PM

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ok, its reinstalling

heavy ravine Mar 28, 2026, 4:28 PM

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fingers crossed

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meanwhile in another terminal can you show me npm --version

thick leaf Mar 28, 2026, 4:28 PM

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11.6.3

heavy ravine Mar 28, 2026, 4:29 PM

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wait what is this right

thick leaf Mar 28, 2026, 4:29 PM

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hm? npm version

heavy ravine Mar 28, 2026, 4:29 PM

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one sec

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ok what we did should work though

glad sluice Mar 28, 2026, 4:30 PM

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ye

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let him try

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rq

heavy ravine Mar 28, 2026, 4:30 PM

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actually once its done

glad sluice Mar 28, 2026, 4:30 PM

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the 2 lines at top

heavy ravine Mar 28, 2026, 4:30 PM

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close the terminal and reopen it

thick leaf Mar 28, 2026, 4:30 PM

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it reinstalled, issue persist

heavy ravine Mar 28, 2026, 4:30 PM

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then do unsloth studio -H 0.0.0.0 -p 8000

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close the temrinal and reopen it

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then issue the command in a new terminal

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windows can be finnicky with registry entries

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if that doesn't work , Mugi you can do whatever u want

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😄

thick leaf Mar 28, 2026, 4:31 PM

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wtf

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heavy ravine Mar 28, 2026, 4:31 PM

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you're welcoe

glad sluice Mar 28, 2026, 4:31 PM

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wtf happened to unsloth

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why did go high constrast

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xd

heavy ravine Mar 28, 2026, 4:32 PM

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he maybe has dark mode somewhere?

glad sluice Mar 28, 2026, 4:32 PM

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do u have extension?

heavy ravine Mar 28, 2026, 4:32 PM

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on the browser as a setting

thick leaf Mar 28, 2026, 4:32 PM

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i dont have extension but i have enabled force dark mode

heavy ravine Mar 28, 2026, 4:32 PM

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yes don't do that lol

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we have internal dark mode

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once you login

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you can flip it

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it was in the output of his chrome://version , it showed:

Command Line: ... --enable-features=WebContentsForceDark ...

thick leaf Mar 28, 2026, 4:33 PM

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do you think the issue was the wrong mime type association?

heavy ravine Mar 28, 2026, 4:33 PM

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yes

glad sluice Mar 28, 2026, 4:33 PM

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thick leaf do you think the issue was the wrong mime type association?

100%

heavy ravine Mar 28, 2026, 4:33 PM

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what we'll do it so that other users don't have that issue is register them

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thank you for reporting that

thick leaf Mar 28, 2026, 4:34 PM

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thank you guys ❤️

heavy ravine Mar 28, 2026, 4:34 PM

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that was a tricky one

glad sluice Mar 28, 2026, 4:34 PM

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this was the most intressting one

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so far

heavy ravine Mar 28, 2026, 4:34 PM

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yes by far

#http://localhost:8888/ shows nothing

Stop studio first, then: