# Binder hang at launching

**URL:** <https://discourse.jupyter.org/t/binder-hang-at-launching/25594>\
**Category:** Binder\
**Tags:** help-wanted\
**Created:** [May 8, 2024, 4:14pm UTC](https://discourse.jupyter.org/t/binder-hang-at-launching/25594 "2024-05-08T16:14:03Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![fomightez](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.jupyter.org/fomightez/32/495_2.png) [@fomightez](https://discourse.jupyter.org/u/fomightez)\
**Post date:** [May 9, 2024, 2:42am UTC](https://discourse.jupyter.org/t/binder-hang-at-launching/25594/5 "2024-05-09T02:42:27Z")

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You posted the link above in your original post in this thread as:

```plaintext
https://mybinder.org/v2/gh/changliao1025/pyflowline_tutorial/HEAD?labpath=notebooks%2Fyukon%2Fdggrid_example.ipynb

```

That gives you a 404 because your `environment.yml` messes up JupyterLab and so it is present.  
Notice the Binder conda example’s [environment.yml here](https://github.com/binder-examples/conda/blob/f00a783146e9c6a2ed9726f01fc09fbfbad2f89e/environment.yml) doesn’t include Jupyterlab.

So you can use the following links to use Jupyter Notebook instead:

- `https://mybinder.org/v2/gh/changliao1025/pyflowline_tutorial/main?filepath=notebooks%2Fyukon%2Fdggrid_example.ipynb`

- `https://mybinder.org/v2/gh/changliao1025/pyflowline_tutorial/HEAD?filepath=notebooks%2Fyukon%2Fdggrid_example.ipynb`

> [@changliao1025](#):
>
> I now point to the head to avoid confusion.

Either of those will work. Notice `HEAD` vs. `main` doesn’t matter despite what you imply in your last post where that quote is from and you say the problem is resolved. (Or may you meant to say you point to `root`/default/no notebook which was what the link for the launch badge you had in [the README of the repo](https://github.com/changliao1025/pyflowline_tutorial/tree/1294d4757ab1439e66a3a18965d2cc13fe968621) was set to do?)  
The big thing is that `labpath` in your original URL has been replaced by `filepath`, as discussed [here](https://discourse.jupyter.org/t/using-jupyter-notebook-in-binder/15595/3).

#### Alternatively, or if you prefer JupyterLab as the interface (or because this was closer to the original URL you posted in this thread)

I haven’t test it yet, but I suspect if you remove JupyterLab from your `environment.yml` file and let MyBinder infrastructure handle JupyterLab installation by default as it wants to, the original link you posted that uses `labpath` will work again to go directly to the notebook.  
**The only reason it didn’t work with the `labpath`-involved URL before is because you messed up the JupyterLab that MyBinder infrastructure wanted to include.**  
And so the UI makes a correct link if examples are adhered to closely.

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_[View the full topic](https://discourse.jupyter.org/t/binder-hang-at-launching/25594)._