Repository: stable-diffusion-webui
Issue: [Bug]: TypeError when creating embedding with SDXL selected.
Labels: bug-report

### Checklist

- [x] The issue exists after disabling all extensions
- [x] The issue exists on a clean installation of webui
- [ ] The issue is caused by an extension, but I believe it is caused by a bug in the webui
- [x] The issue exists in the current version of the webui
- [x] The issue has not been reported before recently
- [ ] The issue has been reported before but has not been fixed yet

### What happened?

bash webui.sh --server-name=t1 --disable-safe-unpickle

When I create an embedding in the train tab and I have SDXL ([sd_xl_base_1.0_0.9vae](https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0/blob/main/sd_xl_base_1.0_0.9vae.safetensors)) selected. I'm getting the following error:

```
Traceback (most recent call last):
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/gradio/routes.py", line 488, in run_predict
    output = await app.get_blocks().process_api(
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/gradio/blocks.py", line 1431, in process_api
    result = await self.call_function(
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/gradio/blocks.py", line 1103, in call_function
    prediction = await anyio.to_thread.run_sync(
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/anyio/to_thread.py", line 33, in run_sync
    return await get_asynclib().run_sync_in_worker_thread(
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 877, in run_sync_in_worker_thread
    return await future
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 807, in run
    result = context.run(func, *args)
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/gradio/utils.py", line 707, in wrapper
    response = f(*args, **kwargs)
  File "/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/modules/textual_inversion/ui.py", line 10, in create_embedding
    filename = modules.textual_inversion.textual_inversion.create_embedding(name, nvpt, overwrite_old, init_text=initialization_text)
  File "/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/modules/textual_inversion/textual_inversion.py", line 259, in create_embedding
    cond_model([""])  # will send cond model to GPU if lowvram/medvram is active
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1518, in _wrapped_call_impl
    return self._call_impl(*args, **kwargs)
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1527, in _call_impl
    return forward_call(*args, **kwargs)
  File "/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/repositories/generative-models/sgm/modules/encoders/modules.py", line 141, in forward
    emb_out = embedder(batch[embedder.input_key])
TypeError: list indices must be integers or slices, not str
```

I have started the web ui like this:

`bash webui.sh --server-name=t1 --disable-safe-unpickle`

SDXL is downloaded from [here](https://github.com/AUTOMATIC1111/stable-diffusion-webui/wiki/Features#downloads) 

### Steps to reproduce the problem

1. Downlod sd_xl_base_1.0_0.9vae
2. Put SDXL in the models/Stable-diffusion directory 
3. Select it as Stable Diffusion checkpoint
4. Create a new embedding in the train tab. 

### What should have happened?

Embedding should have been created.

### What browsers do you use to access the UI ?

Google Chrome

### Sysinfo

[sysinfo-2023-12-18-15-54.json](https://github.com/AUTOMATIC1111/stable-diffusion-webui/files/13705809/sysinfo-2023-12-18-15-54.json)


### Console logs

```Shell
################################################################
Install script for stable-diffusion + Web UI
Tested on Debian 11 (Bullseye)
################################################################

################################################################
Running on alexander user
################################################################

################################################################
python venv already activate or run without venv: /home/alexander/Developer/stable-diffusion-webui/venv
################################################################

################################################################
Launching launch.py...
################################################################
Cannot locate TCMalloc (improves CPU memory usage)
Python 3.10.7 (main, May 29 2023, 13:51:48) [GCC 12.2.0]
Version: v1.7.0-133-gde03882d
Commit hash: de03882d6ca56bc81058f5120f028678a6a54aaa
Launching Web UI with arguments: --server-name=t1 --disable-safe-unpickle
no module 'xformers'. Processing without...
no module 'xformers'. Processing without...
*** Error running preload() for /home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/extensions/stable-diffusion-webui-wd14-tagger/preload.py
    Traceback (most recent call last):
      File "/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/modules/script_loading.py", line 26, in preload_extensions
        module = load_module(preload_script)
      File "/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/modules/script_loading.py", line 10, in load_module
        module_spec.loader.exec_module(module)
      File "<frozen importlib._bootstrap_external>", line 883, in exec_module
      File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
      File "/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/extensions/stable-diffusion-webui-wd14-tagger/preload.py", line 4, in <module>
        from modules.shared import models_path
    ImportError: cannot import name 'models_path' from partially initialized module 'modules.shared' (most likely due to a circular import) (/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/modules/shared.py)

---
No module 'xformers'. Proceeding without it.
Style database not found: /home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/styles.csv
*** Error loading script: tagger.py
    Traceback (most recent call last):
      File "/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/modules/scripts.py", line 515, in load_scripts
        script_module = script_loading.load_module(scriptfile.path)
      File "/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/modules/script_loading.py", line 10, in load_module
        module_spec.loader.exec_module(module)
      File "<frozen importlib._bootstrap_external>", line 883, in exec_module
      File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
      File "/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/extensions/stable-diffusion-webui-wd14-tagger/scripts/tagger.py", line 5, in <module>
        from tagger.ui import on_ui_tabs
      File "/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/extensions/stable-diffusion-webui-wd14-tagger/tagger/ui.py", line 10, in <module>
        from webui import wrap_gradio_gpu_call
    ImportError: cannot import name 'wrap_gradio_gpu_call' from 'webui' (/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/webui.py)

---
Loading weights [e6bb9ea85b] from /home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/models/Stable-diffusion/sd_xl_base_1.0_0.9vae.safetensors
Running on local URL:  http://t1:7860

To create a public link, set `share=True` in `launch()`.
Startup time: 3.5s (prepare environment: 0.7s, import torch: 1.1s, import gradio: 0.4s, setup paths: 0.4s, other imports: 0.2s, setup codeformer: 0.1s, load scripts: 0.2s, create ui: 0.2s, gradio launch: 0.1s).
Creating model from config: /home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/repositories/generative-models/configs/inference/sd_xl_base.yaml
Applying attention optimization: Doggettx... done.
Model loaded in 2.3s (load weights from disk: 0.8s, create model: 0.4s, apply weights to model: 0.8s, load textual inversion embeddings: 0.1s).
Traceback (most recent call last):
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/gradio/routes.py", line 488, in run_predict
    output = await app.get_blocks().process_api(
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/gradio/blocks.py", line 1431, in process_api
    result = await self.call_function(
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/gradio/blocks.py", line 1103, in call_function
    prediction = await anyio.to_thread.run_sync(
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/anyio/to_thread.py", line 33, in run_sync
    return await get_asynclib().run_sync_in_worker_thread(
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 877, in run_sync_in_worker_thread
    return await future
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 807, in run
    result = context.run(func, *args)
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/gradio/utils.py", line 707, in wrapper
    response = f(*args, **kwargs)
  File "/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/modules/textual_inversion/ui.py", line 10, in create_embedding
    filename = modules.textual_inversion.textual_inversion.create_embedding(name, nvpt, overwrite_old, init_text=initialization_text)
  File "/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/modules/textual_inversion/textual_inversion.py", line 259, in create_embedding
    cond_model([""])  # will send cond model to GPU if lowvram/medvram is active
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1518, in _wrapped_call_impl
    return self._call_impl(*args, **kwargs)
  File "/home/alexander/Developer/stable-diffusion-webui/venv/lib/python3.10/site-packages/torch/nn/modules/module.py", line 1527, in _call_impl
    return forward_call(*args, **kwargs)
  File "/home/alexander/Developer/stable-diffusion-webui/stable-diffusion-webui/repositories/generative-models/sgm/modules/encoders/modules.py", line 141, in forward
    emb_out = embedder(batch[embedder.input_key])
TypeError: list indices must be integers or slices, not str
```


### Additional information

I've also tried it on the dev branch but the same error ocurred.