[Bug]: TypeError: 'Blocks' object is not iterable in script_callbacks.py causing crash

[jangofett890]

Is there an existing issue for this?

• I have searched the existing issues and checked the recent builds/commits

What happened?

The recent commit removing the Image Browser from the repo #3537 into it's own extension seems to have broken the gui entirely.
After I noticed all the removal for the image browser I quit the gui, and installed the image browser and inspirations extensions, I also have aesthetic gradients installed.

Upon starting the GUI with the latest build and these extensions installed you get this crash
Traceback (most recent call last):
File "D:\stable-diffusion-webui\launch.py", line 206, in
start_webui()
File "D:\stable-diffusion-webui\launch.py", line 201, in start_webui
webui.webui()
File "D:\stable-diffusion-webui\webui.py", line 132, in webui
demo = modules.ui.create_ui(wrap_gradio_gpu_call=wrap_gradio_gpu_call)
File "D:\stable-diffusion-webui\modules\ui.py", line 1649, in create_ui
interfaces += script_callbacks.ui_tabs_callback()
File "D:\stable-diffusion-webui\modules\script_callbacks.py", line 21, in ui_tabs_callback
res += callback() or []
TypeError: 'Blocks' object is not iterable

Steps to reproduce the problem

1. Install https://github.com/yfszzx/stable-diffusion-webui-images-browser
2. Install https://github.com/yfszzx/stable-diffusion-webui-inspiration
3. Install https://github.com/AUTOMATIC1111/stable-diffusion-webui-aesthetic-gradients
4. Run webui-user.bat
5. Crash

What should have happened?

The UI should run with extensions enabled

Commit where the problem happens

3537, Running on Commit hash: c623fa1

What platforms do you use to access UI ?

Windows

What browsers do you use to access the UI ?

Google Chrome

Command Line Arguments

--medvram --listen --deepdanbooru

Additional information, context and logs

No response

[nicentra]

Got same issue, but the issue is https://github.com/yfszzx/stable-diffusion-webui-inspiration - Try to remove the extension and run again. Not sure where this needs to be fixed though

[Gonoshift]

Same problem here, I've opened an issue on the extension repo: yfszzx/stable-diffusion-webui-inspiration#1

[yfszzx]

thanks to report this bug, it will occur when the inspiration directory is empty, so I didn't find this error during development.

I have fixed it, run "git pull" under stable-diffusion-webui-inspiration to get the new version， and restart webui