With gradio 6 JS does NOT work after move from init to launch, so must downgrade to gradio 5.49.1

[AngelTs]

Describe the bug

gradio 6 does not work with theme keyword, use gradio 5.49.1

Have you searched existing issues? 🔎

• I have searched and found no existing issues

Reproduction

...
with gr.Blocks(title=".....", theme=gr.themes.Soft(),
...
will produce the error:
[TypeError: BlockContext.init() got an unexpected keyword argument 'theme'

### Screenshot

_No response_

### Logs

```shell

System Info

gradio 6
gradio 5.49.1

Severity

I can work around it

[AngelTs]

MOREOVER:
You can't use head, css or js in with gr.Blocks(title=".....", ...), only in demo.launch(...), BUT in this case JS DOES NOT WORK!!!
downgrade to gradio 5.49.1 is the only option for now!!!
(also can't use show_download_button and show_api?!?)

[freddyaboulton]

Hi @AngelTs - can you please share an app where js in launch does not work?

[freddyaboulton]

(also can't use show_download_button and show_api?!?)

This is covered in the migration guide: https://www.gradio.app/main/guides/gradio-6-migration-guide#show-api-parameter-replaced-with-footer-links

[freddyaboulton]

Hi @AngelTs - can you please share a minimal reproducer?

[AngelTs]

Hi @AngelTs - can you please share a minimal reproducer?

In gradio 5.49.1 and gradio_client 1.13.3 next code work:

with gr.Blocks(title="sample", theme=gr.themes.Default(), 
            js="""
                        function() {
                                    document.addEventListener('click', e => {
                                    console.log("clicked event");
                                    alert("clicked event");
                                    }, true);
                        }
            """
) as demo:

In gradio 6.0.2 and gradio_client 2.0.1 next code DOES NOT work:

with gr.Blocks(title="sample") as demo:
js1="""

            function() {
                        document.addEventListener('click', e => {
                        console.log("clicked event");
                        alert("clicked event");
                        }, true);
            }
"""
demo.launch(

            theme=gr.themes.Default(),
            js=js1
)`

[freddyaboulton]

Thank you, we'll take a look

[dawoodkhan82]

@AngelTs Have a PR to fix this here: #12508

Thanks for flagging!